Model Engine Maker

Engines => From Kits/Castings => Topic started by: Ramon Wilson on December 06, 2017, 02:39:37 PM

Title: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 06, 2017, 02:39:37 PM
Hello again guys - it seems quite a while since I posted the last few words on the Wide a Wake and as mentioned elsewhere since Sue retired September last the year has disappeared before our eyes. I owe two nice people long overdo emails - sorry George and Sandy I really will be in touch soon and feel quite guilty for lack of input and tardiness - howeverrrr ...

I’ve been working on this project for the past few weeks. Now truth to tell as I’m sure Simon will be the first to testify to I have debated whether or not to post about it. Not for any other reason than that of  – TIME.  As I get older ‘time’ becomes ever more precious and what is done with it becomes ever more important not to do something that sees no benefit

Posting (a build log) unfortunately does take considerable time for little if any benefit so I’m now reluctant to commit myself to another Wide a Wake journey. That said I do miss the contact on here so what to do?

With the lighthearted ‘Swarf Making’ thread having backfired though to be fair I have had some nice PMs as a result and another pleasing one from Jadge to redress the situation I guess the only thing to do is totally put that to one side and pop some pics up of this project in the hope that it may generate some interest rather than any anguish. It won’t be a build log as such just a few pics from time to time to show the latest progress but hopefully some will enjoy it a bit more than pics of my swarf production. I can’t explain the inability for some to see one of my pics on that thread – I could see them clearly enough on my PC so hopefully this will not occur again. Please say if these pics don't show.

OK, the engine -

I bought these castings in 1997. They were the first ones for this engine produced by Peter Southworth as a result of a conversation we had previously had. Originally bought as a Twin Tandem engine one half was later passed to my friend John in exchange for two new flywheel halves and an outer pedestal, the original four part flywheel having been made in ‘97 as a hedge against threatening redundancy. The parts for this flywheel were all machined at home but once bolted together the grooving was carried out at work.

(https://lh3.googleusercontent.com/sa1IZ03lXQfL-Nc8UJ3Qzvw0aN_0YgMI6-IP7pMyZA0ROYSJnW9SvQH2h5ijXTWfUMWns0wwRtJelCi-SipSDrtxjA8kUTlOYD9LcT6rMq1iuZQQz5ZJQ0n4Bnb0Yk_jJjHpjpjMHia5Vefi2t9vLJYsPwtbNvspZPjd9ueJZTnlraiSQIrNH2bDu3CjvYgDeO35IZ0h-_HELZmGqyVccUh0e9GoZpGGBleQKQerCEEAHdMv8qvyiejheXPQkCF0__2CFQMl7oV6NI1QbbgA0OBBIrCA4PvdlqUugVHN2WjeRNZtIGU_lW46M1U3b2EeAkUfWtgbOIjyAS5yyQfM96hNZtvASYiVyWcObHzmPTOUP4Pgp8h3NFtAr_1CC7-C1O_FrthOLMX_t0hmBYIoBe4Dfhw3wc9iWKTGTdcycKqud4yuiPWhjkgNoVTdqKE6kmMjemQTUjIUsWUTH3j-D8Eh0U4jxfsMulCyUGMs1MCOKE26CdWT-VlKD3JbRmD2HrB5TQrRvMbO2QAui3gMgmVM-1WNpOuMhb5ATnsI1OU6wIFZMJbbO89oj21tD79mneG1d3DztiLcz1hj8yvZlmJ4rChYhqjml5iSFE0Ghcc=w1224-h918-no)

It’s all sat under the bench since then. Don’t know when the decision to ‘split in two’ was made but that’s some time back too. Last year I decided to make the base – thinking being that if I did make it then I wanted to build it up as it progressed and not fit it to a temporary base. Hopefully with the several mating surfaces involved this would hedge off any potential inaccuracies on re-assembly.

The base was made as sturdy as possible using some multi layered ply coined from a redundant crate whilst still at work. The top is 3/4” thick MDF board and the top surface is Formica glued in place with epoxy resin. The ‘mahogany’ surround was sawn and planed from an old table top.

(https://lh3.googleusercontent.com/dvXeDQb8SSNUy7Gj-sCdjK1sEXXBprOkKTd6WI8m0UX4YhNYRqVSU0qy1nelY4m2Eka6B2CO9etb853ipdd1PHKkgOHtlPGcl87zpkla-cWQTRo99blCS5iJeGF4i_auMpUeD6pJ1uPhXSqHPvt4LR8UXKHoCTEP_kvpSvFfTmBeaMneL9jvP8F5gG4s8TSNqZscZXKuLrFHMifc80iWXnoGLM1gGiT7Gn9lLQ1v9Mk8TgvJ8qTUtrg2Y4otgC-A87ZGOxMA_0tydueaJgGv8iUKDqN-W0Z-Co4f147KROn13spfrsGO3N3kbOfnVbK9vZmaSXxJ7lIsMkalN4bAGzs87M67uubDr1CDZHpm13NR6vN6up5QfTD5_9dWHRMrzLBujkbqhwi4aylxh5zhhy6NUfikd3B7cy14pzW959D3ZrQdO7_qw5dAgqFPARxpgRl8kJlefTEN2Vje9Bgvi8-sEvHWmpdRc7L1a_qrFrYOEx3A9I1vyIdCjoaN_tvY_YODEjZ1Pq_a6uwxGAihs5vK2FO4G7z18aeukrjbNwbhlPqEgDYebUPe--r-YgNa1lkvzXwrMAQIDOovfuvanTpUGHlYdhwiUPKxPfCv-Rk=w1224-h918-no)

(https://lh3.googleusercontent.com/OzLko1jgADBEgQI31j6NW3P18RZoKc1-z7xhnUNoLIukqcuwIirTaNwCj-TR3fv2Qauhd86G_HxLk5WUwaBR55pNp7Rj13Q-gQCNRy94AjLz-O6AYo42fb80wwn_HPo2AcRkZrGBZUXd9OXOGmPirw4W--23pmf6blw4UXxrVip5sZ_PGyzxFydzNgU6SKZyfH-8Nf_w_7k8fetKJRdEgVojxU29vExTMDm1NMUrp0YJUOWwp-qNxGtpBK6Qcx0oB0yM9JexE30uGqmAi8rbzdklq6SyScjGy4D7n4OBKivD6qKbD_l8HY9z98Nvb7aXNtFIpW-8NJqJHU_NyLaa4wZV8N6kh9XLjWFeWZZaUpMVyc0hMC6aMqUccpQzFic6exYog-7GJ5FpByhBMtisLufoFtVShIRJK3oE8HDPL6PTkBzi_w3Lb8zlzlaorjSGv5ydKOD5gZjttI8Zvf8yaAXtigcNE9codYyNUyNCctKs0DzYL3KHf4mfwYC7HUYFD5hnB5kdY_gJ96KJDCTk5IERQiaqqfVTEG963jMVbI3s-8voS16HbHH6hL1e4vCf5B4GTJnhPlMUh0rARTTAmVRbfe8ugeg7c9Hw3i-fY28=w1224-h918-no)

(https://lh3.googleusercontent.com/_uLSWCpklAp00z_HeBgg58UZdcrAICprI6suK6d83TqM823-VQOYXV9vJAdTT9cT8JVwt5lPaO-mO2e6F6_We_GBO4xGA1PG7XXREJS2KMfPefp69uAooo-yooKgJZCxXLQzYgK2lqDJPlVuRz_qHgul9aXxRQov37gdSFCJvy0mcvqgtNDliz1hAQgdlGmZEjYgyohwruJUekapzTkO7_fP9KU7hdZU_IEBroz6UcBiExWQgkdauQiSyQhQxkFgdthu9G4wXkXSKLABmPODmo16S4il4Ok6eQPcDNma6r2MbfdF_XGZ5HmX5WporF4aSQtqRqmkwiqZr0x7Xy4O0cnyKYnew040U-8kgeG9DIe9t6dsv9cbgzdsaNpWfJhlJ9qXVTP-xPsu0Ueod2t5Kv8RMhKYpJ7kSv7NL90KuFFE28XCVr5JMcyIfbMCO1dnCqzBxENsHjB_X2mZ-4XqK2Dw8iaI64aWoGDSiMZsTuaf9yeEk6uYdti1fFWg9AfDxCHshkQR6g-8kz4cNNeWpA87EG3GyLMuR08oSRqRc_LnNeUXvTUY5xJs8fX60p8SE_FcOBMA-WlrDwZnuFZ3Zfyufx2pOO1XV3oIPB-5IEw=w1224-h918-no)

With thoughts gathering to an impending start a dry mock up was in order

(https://lh3.googleusercontent.com/1AnjgB6XwUp5myDGhnSKGAvUL0HDoKr2GNCJBlj7rJrsiL6xW9a96y7dWCLZzaU9dHa15p08oLmmnhok78df9vvc2nxIfWFlNGII-PsDFH_voblNq7PJLMOKXkyXaqyfZ-6PmVOI_W5minQqnh68KUc7pMYQmfZqbCi0ud6ZgRptuBFllRwFawxc7Mec_c72NtF6lfe7ucaQBsNEgiW_s82dRQen3vMCOUaYwnlFvA4mYKcu0tne6V1pSKsOdaae3U086lafic6yzIcLtKmlh6700aj_-rLLvdEW-BlNyOo4Ct1Hizh_ThuYOqtcVgn8h045wn4Bjleux4euSP30Bp3EaidEIkFjjNc38fXZKy-QORZ0Wx_AJ2DPnbKMfGza_7zlxHXYq_EAQkALUagWXQQxa946967aOnpDjnOLSPAqlxmWJnVbMWUXWQBHFGtNMFn6Kz9T0fNcnWouvMCbsaW5Q9Q566gfvmBHlwLSC9fUg7g-FkkMIiBbiB0hylsxNxY8XR1VD1f2u_9A2-VPan_resa45LzpgKdW-JSJfj85PGEdJojfR0rKgiUdPHIhraIzO6mIsH8N0w6Gj6tPpk4Xvq7ZQa_gQKD1krbCHo8=w1224-h918-no)


Then first off was to establish datum faces on the bed plate castings. The lower faces were filed to sit flat on the surface table without rock then set up on the mill to create a datum face. These were certain high points like the hold down bolt pads and flanges

(https://lh3.googleusercontent.com/tcoWkQNMAnmmhjcKd_4mUOd90gGDf3NVv-ewr16uvpOl0dt4W_4pNOGx5Cyib4_W-W02bF4u2JVeCmmaN5pPLzIS3apyasueh81uRHeNerBuSQN0MqKmcm1ZqCTBbnSHcxO6avuIeqEuKeq7l6qiEctmgJvk_yMbI2ENIAWRiwRKg6Sxieoejb0C4t7y_-Vvb-bNZTOjBV2VHmbp_z9YNjBOIDi_Lz66sbgJVbw1yvNBnn-5fb_6iPBmGrq1WGIv9gBisBogpsaFbOKubaj2N1iJQiIwoF3EFsoN2V6BwazpDr-vlAKmRbqlj20hhL76niGyn5A2gPakPkU7D0CrOJDphoLCrNewvTB7n1lbQPNgFw83hk3nXGNtopM9UJPeu95F4idoSezxSqiU4lQchy0caBYWWTxbwK24wnbJw9rYvB4_FrcuV0Lf71BbkKog4HInfv7juDgDUIiIL8QfDSOO_EsiOyPKbJQgjgDQBs1xBFJXe_HbrQdYV3IMvd7l6t4kd4wGfj51CKNYdQ8GlSI4CEosI_pd_dLKxZhyCG7S3w4rBHPNW5N2YBUERrLtA218Y8RUa5Fz5M2LXMD19Mk18nz5aYPSRwfyx91xg80=w1224-h918-no)

The castings were then set up on these points and the lower faces milled to give a true datum and a finished face

(https://lh3.googleusercontent.com/D_ZJoMwGvklSHs7yfv8Mq29J9t2aEJq-Up4mBgxIXDgFl086ClMFrYLA56SgN2zXKntOoN1ZKwjJXE7-llJ8eznd8adOfYm_dj0o0r6meX4EzcnWN5rwZVOHV4MPX7VorRpXvGDIsjPQxFZHB-rlI41AQMq8GSyDCA5k56IErk_fnB4q3lr1dGhH8eLpBDm8rRGLcyqnOmL6yewvh_Slh5Dwq1pSa6blRDYtVYzyQSvTZS1fgh3TvLAeuied63i_V7N06ggKrOdTZ0nw2d3R8HT9ouSDQ9wdgstBgdZHW4fq8Z7JGKndST7K1-vML8NirSpRtrfUMdBrbOr7e2xM7rDvom7tEmxg5QEFfkhGuyN8bVAZQrR4HfGr0TkRm3JiHS4bene7sHmcZ6r_Wyyzeq5muejuvx5g21a9afNPTqKYTUrTSmtaLgKRHnzLIpPb1I5vZ_gH8iR9WcL7df1iSDOTQi0YKRJI_G-XupQhu0rqXo0WgQvWWv2B6mZ0rjZlT6V6dYyh20Z6MWJyUGJmSqupN6qCioxWbSjJwg6fKJPYj9CZdKrpgTUc6PSIS0PXiipuqnJjpixxBReIbIKVbZxh8jnS2s-ZikC2veR46ZU=w1224-h918-no)

The CI castings – only five were used – the two main bedplates, the cylinder plinth, the HP cylinder and the pedestal bearing. All remaining ‘castings’ have been machined from solid material. The castings themselves were truly superb to machine - not a hint of a hard spot or blow hole and with plenty on the major surfaces to machine. The only area where they proved marginal was the width of the bolting flanges on the bedplates but as two of these were going to be done away with that wouldn’t be an issue. The other – for bolting the cylinder plinth to – was milled away and an insert screwed and JB Welded in place. The last casting, in gunmetal is the air pump which will be tackled later.

Well, I think that’s it for the first post – as usual I hope this will be of interest to some - obviously any questions please fire away. Please don't expect anything too regular - late night posting is out it will have to be when it can befitted in during the day - now the second main bearing's bore needs turning to.

Regards - Ramon (Tug)

Some may remember that because there are several 'Tug Wilson's' I began on here using my given name to avoid possible confusion. I think it's fair to say enough water has run under the bridge on here to know which one this one is. Most, virtually all, use 'Tug' - I'll leave it to you what you want to do. As Zee says I'll answer to anything but 'oi you' or 'Raymond'  :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 06, 2017, 02:47:24 PM
Wow - that is one impressive flywheel! This looks to be a very interesting build, hope you do continue the build log!

 :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on December 06, 2017, 03:14:58 PM
Thanks for the progress report as it is interesting to see where all that swarf originated from. I have seen a set of the Twin Tandem compound castings in the flesh and it is certainly a big beast that will weigh rather a lot when complete, I expect the base is heavy enough maybe adding legs to it and displaying as a table would be an option rather than trying to find a suitably strong shelf.

GM seems a bit of an odd choice for the pump casting as it is the one that is likely to see the least moisture, was there a reason it was used or just easier to cast the shape?

J
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on December 06, 2017, 03:22:11 PM
Tug,

Always get nuggets of inspiration from your pictures or words so are happy to see you post something on this monster undertaking.

 :popcorn:

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Flyboy Jim on December 06, 2017, 03:23:34 PM
Tug............this is a really interesting project.............please keep this build log going when you get the time. As for benefit........build threads are a huge benefit for all of us and is what makes MEM such a fun place to hang out. Also, the source of knowledge they generate.

Jim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 06, 2017, 05:37:18 PM
Amazing Ramon....that is one size LARGE model!!! :o

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on December 06, 2017, 06:34:17 PM
Tug............this is a really interesting project.............please keep this build log going when you get the time. As for benefit........build threads are a huge benefit for all of us and is what makes MEM such a fun place to hang out. Also, the source of knowledge they generate.

Jim

Jim said it well!! Keep it coming, Tug!

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on December 06, 2017, 07:35:31 PM
my you have certainly been busy! good to see where all that swarf came from  :ThumbsUp:

keep up the good work and please share when you can, we all like too see how others are progressing and gain ideas on how to do something.

Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on December 06, 2017, 07:38:43 PM
Pulling up a chair and some popcorn.

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: fumopuc on December 06, 2017, 07:45:26 PM
Hi Tug, good to see you back in the shop with this exciting project.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 06, 2017, 08:24:26 PM
Hi Ramon,
This model and your workmanship are an inspiration. Having seen the bits in the flesh at Forncett and thinking "I'd like to make one of those" I'll be following along with a lot of interest.
Regards, DT
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 06, 2017, 08:29:42 PM
Ramon

I am curious to know what finish you are intending on the top of the base board.

I have just finished wood planking the one for Agnes, and it has turned out very well IMHO, I was originally going to do the black and white chess board tiled effect but thought it would look a bit OTT and distract the attention from the engine itself.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Don1966 on December 06, 2017, 08:33:01 PM
Ramon always good to follow your educational post and glad to see you on a project again my friend.


 :cheers:
Don
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on December 06, 2017, 08:33:14 PM
Tug the onset looks great. You’re intro into the thread is a testament to your heart felt feelings for modeling  :cheers: :cheers:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 06, 2017, 10:53:28 PM
Always enjoy your posts Ramon, er, Tug (I'll get used to that pretty soon, I'm sure :)).
Thanks for posting the start of your build.  I will look forward to reading whenever you see fit to post!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 07, 2017, 10:06:05 AM
Good morning guys - really nice to hear from all of you.

Thanks for your welcoming words and comments which are much appreciated. I will perhaps succumb to your charms and put a bit more up than intended but have to say the time factor is still an important one for me. We shall see what the days ahead will bring.

To comment on a few points :

Crueby - the flywheel does get used but not quite in that form - more on that later

Jason - yes as said it was originally bought as a Twin tandem - I had to go to the Post Office to collect it as they wouldn't deliver it  :o I have to admit I had not even considered the weight factor until that moment ::). We bought a new sideboard for the hall that was intended for the Wide a Wake but having placed it on there decided we didn't like it. The space is therefore reserved for this one ;)
I guess the air pump is bronze due to the amount of water running through it (if used correctly) both the cooling water and the effluent. It's not a particularly nice casting as it's slightly misaligned but I guess some careful fettling will bring it to shape. One things for sure its going to be a real pig to set up for the initial ops on the bores

Bill - the base is 44 inches long by 16 wide so yes another big footprint

DT - I was speaking to Bob Potter just recently - it's all still available  ;) Could make for some heavy hand luggage next time you come  :D

Vince - good to see you here - I do hope this will help give you some inspiration to continue on your engine.

Phil - I'm not sure quite what to do at the moment. The top is a very nicely textured stone like surface Formica layer. I was considering engraving  lines to represent large stone flags but changed my mind at the last minute in case I got it wrong  :-\ My original thought was to try to make this as close to a full size in detail as possible but have stepped back from that ideal somewhat. I think I'll go for a 'stylised' base with simple foundation and concentrate on the engine.

Don, good to see you here too - hope you are well my friend :ThumbsUp:

'Whiskey' - I knew it, you are a silver tongued owd devil   :)

Guys, my thanks to all of you for your words -, Simon, Jim, Bertie, Achim and Kim it's nice to see all your names up here too. I'll try to live up to expectation in coming days and post some more pics later but for now the crankshaft and bearings await attention  - I'm off to the workshop ;)

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: jeff l on December 07, 2017, 01:59:37 PM
Tug , Thanks for posting this build .Jeff
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on December 07, 2017, 07:18:09 PM
So you mean to tell us that Sue allows your models to be used as “objects de art” in her household? Now that’s as good as finding a spouse that owns a fishing boat and a liquor store  :lolb: :lolb:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 08, 2017, 12:40:38 AM
Hi Tug

Thanks for deciding to post pictures of of your new, or new again Corliss project; I have always enjoyed being able to see your beautiful work.
Any progress pictures that you decide to post will be most appreciated.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Mcgyver on December 08, 2017, 12:39:56 PM
That is a great looking project, i'm glad you are taking the time to post the build's progress
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jo on December 08, 2017, 05:08:44 PM
Sorry for arriving late  :-[

Is that an all Corliss or one of Peter's Corliss HP and Sliding valve LP engine  :noidea:

It makes a long old engine the tandem but at least it is not as wide (and not as heavy ) as my cross compound  :paranoia:

jo
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 10, 2017, 03:02:29 PM
Hi Guys

Jeff, Dave and Mcgyver - Thanks for your interest in this – Jo thanks for looking in too

A couple of apologies –

Firstly - 10K Pete - sorry, I trust I didn't offend by leaving you out – you just ‘slipped the net’ .

I am well into this build at the moment and have not taken many pics of the early stages so can't do much about that. However, despite your very heartening comments to do so I don’t think I can give the time to this that you may like but I hear your encouragement and will do the best I can so will try to remember to take more pics than perhaps originally intended.

Ok - where to carry on.

I guess first off some words on my thoughts on this engine and where I’m hoping to go with it.

The engine was originally designed by Arnold Throp for Terry Fleet of Fleet Engineering Services who offered castings for varying versions for sale.

It was not a scale model of an original prototype but Arnold had designed it on basic engine principles learnt as an apprentice and subsequent engine fitter in one of the last firms of engine makers, Cole, Marley and Marchant. He produced his own patterns for a single cylinder condensing version that was described in the August and September 1982 issues of Model Engineer

Unfortunately Terry lost all his patterns and castings when the foundry he used shut overnight and the design was fundamentally lost to the ME world.

Several years later during a conversation with Peter Southworth this design cropped up. He told me he had Arnold’s original patterns for the left side engine and also a full set of drawings. He had bought them at the sale of Arnolds estate but had no intention of selling them commercially.  The conversation developed much further and the upshot was that Peter kindly made patterns for the other side engine and the castings then became commercially available again.

A full set of drawings had been sent and as said previously the Twin Tandem was chosen but eventually discarded due to the weight factor more than anything else. I originally intended to make this as a Corliss valve HP cylinder with a slide valve LP but having seen Terry Fleets (double Corliss) Cross Compound running at the Lowmex shows the decision was finally made to make this all Corliss.

There are one or two points of the design that I did not like personally – that’s not to say there’s anything wrong with it – just personal preferences. One was the heavy bolting flange between the main bed-plate and the cross-slide bed-plate. I also felt that aesthetically the con-rod appeared a tad short . I did not like the style of LP slide valve cylinder either so decided I would make one to my own vision from solid. Fortunately there was a large off cut from a job at work that was scrounged – ever the inveterate scrounger!

Original intentions were to try to make this as scale like as possible using full size practice where ever possible but again, time and the desire to do so much with 'what's left' has tempered those thoughts to some degree.


As said all the castings proved easy to machine - beautiful homogeneous cast iron. Despite the long storage under the bench however the cylinder bed plate proved somewhat surprising.

The cylinder bed plate or plinth was machined as the other parts ....
(https://lh3.googleusercontent.com/vKPy-jDJKsqGtgKwtNVnHDD5Upr_FmIxe4vPJmtniB2yxtLwE5ghlQ7fMoGFQ3Vxuqy6LvDaQxowUjF9oTy32WbXMuFf95OL3UbRGxXXN5Qkue12egKmt_BDUqY4KPLx7jPLe2yLXsNg-_hvbZvOziOGnsETJFI5c41BSN-sDBWml9WHbjWymeKX4wIRDc1qZvmdaoUi9rR6IPqW2sSK7WLLfA8KUF2G_hboKiC0Vu9-bVVgltkwMatQ5_eug0UDTsyid5k-M4BxAMLxmx1BHGKZycnKrH6CfKYw7CRC0rJzsK4iaDMv3hctOCEHf9v-DcIRI10EBxixY9NdIp4Xu62aY0kn9ZGCwt-vHvKXgLFtD24OWn6hDp4YbhjU0zkwzOAdilrBOywjuRFyT99H5p9tJUNSiO3nTUvO_eoc-EpU5ZJJvjrDf0qso3HF1T3ieL2C1P8kEUKkDGct1cm8Hj7rRxgPhxyVi6up92tHCQjfXp9GbktQOzk8FVSGmaRRnJL2WwKJQmfLEwzruApdWWfI8byk4yF-zSlNJnUYDBoWH7FLpRq2mqcxpWSCIECnwk2te4Gg0LRCDTomLKQLwQjF4gIqRGEQqXlS_k_qL-U=w1224-h918-no)

...but with the change in in converting to all Corliss came the need to modify the bed plate by machining it's thickness down at one end. This surprisingly led to a degree of warping which would require this op doing again.


With every thing nice and flat at this stage however it was time to turn to actual machining.

(https://lh3.googleusercontent.com/BgOEXE8aNj_jjqtYU5Bjc5Vl6rlu7uaThORkeg8RLTM7_b5xqzd6YHYP1qer_U7XtNp4cHPuMWvO5P7qZbwqgikzbfc8W1YSMzK47YQbQ5rCJUiSWecE0CWB7Ql9Vk8KBvvlEvMeDgiIAHzbl-f7bFmUSW4kjDBn25aiWBlqW8LU4lCekMghX7XkyJiKBY7Gw9cIY6ae3xP2Dwy4Lz6HHvQ5ACDgTwhMC59fR168Mj1VD8WmmkHJkGmxzOOPpYXVfRQ2rg9a4I0bgiw980onwnp37_AoO6H481Ng8rFoGbRaKVGfB2BFNv682ybL17awa9XVbK7AQ5KVGSwomBU6qxmz-J0BQYQv3PuXCS6nDr9pdKsp-t8LXaxcXL2NZoKe_YYvfpHV2X_CouxPyW4zvPWovCYZbgu7dUECtz7yxEr_MS9oPurb1Bwwwa-6AhwOyG8iKAEwv64xNyEkpAG8cee6GWc7OgTN_DUSB5qlFkamdbOPY56e5eymon54Po7tKOy2eQg4tNVfNGJm1tnmyO5yYAh8Q1hdh47rE5dDLv5OEbzlh4hCWYhXuSvuS8YnYMwKSMMPw0nnxXwKTOqh-c8v0LpmTPDEV9KT6R1yOBw=w1224-h918-no)

Another factor I found a tad lacking was the low overall height of the bed-plates so it was decided to mill away the beading around the castings and mount them all onto an Ali sub plate. The cast in foundation bolt pads were also milled off and would be re-sited further outwards with pads JB Welded in.

The castings were set up at a 2 degree angle - setting each edge level with a scribing block
(https://lh3.googleusercontent.com/5Ru8r3KVNHTfC8p_Zh7k-1cARRx63BP4QlQRcegNMensHR-tKCDm3-gZs5LTvDtfsB_buLkMtcwV1n4daSej4qEF2pBZJHTM1Yzqj1Bg4FKgDtBNcyZoJd6I6dVwjID4Z8q-ApBkaUSgm8Jb0E5vQ54_fec9esUeUJr6YJ6nu-TDpkCrjM6iXLLEMAZNtn8EN4RwJvhz6_1XgU2dJyEmhz3NLwFV_XgI9m9jUApuNbQQKIrnqTp4OTKc6pmVwQxehnYxBUNCqaqhxWvqNoXN9Sj5Nf9X3nEJW1PX0zdjVQkEGZkUh-K5J9NbUNnVqh1qJBC0f1Bxm_Yo9u0kz_8-GEh1qwDa5C0aO53JKhz6Pfae0DFTxLsmJ0lkaSbLtBz_jjbnpfa60tuD-PP40F8Tcu9SC3QdBQn-xu7yxGvH8uxe6UQft8lZbBI_icp-FkB8iQtFFi-pkjIMO2XYmUj1JUWzxL3QPPL52ObQRMle-svrYLSxkgd2hoxT-MgulEZNpnj6LCOrvwNf4jqV8n1k8m578cPCS4S4Jh5iCOMxfN_738s2TXxz67atctiIWJt0yKTu7cgJAzzddF5WPfuUrhlIs_j-VO-AQb3izbQUBmk=w1224-h918-no)


The new mill played a good part in all this machining but the old Linley, so faithful for so long played it's part as usual
(https://lh3.googleusercontent.com/HhuMqRcZ7pm9ucW2hnKdmsWxr8LxnHaLqoBAZDKfmCIbwsXpzlfQxtYUptwXFo5BPHxIFuq2r9akY1oVsoqI3wEOhPHy2xvnoskSzXusNLpiOAHn1Uc9T6nVJAqC_xVB6Mu8B6HqifVaPKBYYD59Ko-TDvO1DGUY1gUc8OCxJpFgCVWtDgwS7du0hTpvIfa5V-3m17cLkdH0d6iWkf_Z3AfBaqc91rTCEDweQvmRRVYhfoqUeAf0foBmLhM6vis9UA1ITO8799p8zDN6LKMIUOS5cN5AND6jH4S6lw2j15Y0oko1Ss7vkCL4b9N1QiCJwmVzduRbPMZpWOJ88-JdHPq2j1LcuffqXC4p4nJuVo2_OrXNHJW_sW7u9uAoLoLVbKSgW4hYb1gTVeX_rO3BjBDVR4qrW3WRv_mAkLce9H_3QsoMMNWeF78osTaJEQsmr156U1ab1Rs-79WhL0Mnpla80RvwXqcAfW8GhCBXQOxL9crrdEGIjQznzBx66dp4rdujq9Ho9R_7JZjc78RE2SuYS1XtFuD3PnG4D9POCgbjZwyj0AOzFMyc7M_hKWiL3xl8SBFEvAB7reNDJ1IFi9Dged_xBQiWl7ECUqebte8=w1224-h918-no)


The bolting flange was milled away on both bed plates...
(https://lh3.googleusercontent.com/9SRndXwnrAJQyr7voodir7Kl6fP6BMMLocc5w1Z3RoHDE-jpO4Abg1onVZWE9RYGXX4LM2pB8aesqcbJicygTvW_-9pGOrHtE4J318W3iu4FXcVr7k9LL7RQWGlj-F2Oj1X--19_Ip7DLykrCE8say5XTOy4j3bT9rvwuR_gtPKBOGBRbaB2SKiwTqVt0VO_Pu55ZrLvE_LBdVDWATRucfyWCdbzYAgKuro8L-COhmIQT0xyIancsdL5jigSWVM9ualOW00oCzf2Vbt6lHyAswfo86VMHJoaEnxTt_edmbgaYkmUz83DwdANwg1qOcaICaGoiRMiqqXL-V2XXKV1h5Y35IAzHV3lUe70IcIJFIeGiqafZucLqEkIL6es0hp0a8zOAOLEg27ZPXtw-6EWuiN0--XKnbJowDBr6HkxZXv73yZOo89CTTGT7hzJc3gZh_fnwgiwFq_XZVr-HENgAmqjxz8Q_TFW1et4vsKbtCiz-JahDFbShcvZNJ5hRoxA0DlWLb6ik-BoE7M7PAdWUTKbm7p-ntbuyokhWtNIWVT5wAJRKfWhaqmM5t4gbIOE4P2d_4UGLJqjiPQoQYOTTk_hIctPb9CDFW2N3VnEoIs=w1224-h918-no)


... and everything was ready for the next stage.
(https://lh3.googleusercontent.com/UDDJCi3VMN6YnGQbneciIaLJneYK6-N_lOzSN709ZSbtrvWh0aCmlQVSl40AS7tuKrcppmYPX9QuY1p0jB7uyo5oweO_ovjI4d6irM3cE6uwTWvYhhgADZXRoKiLBGbVk7a6oCu0lgTEI1WP6eHRzIRqVdtD97fbpFKEtnzalJkPuXqVojhGtZzJhPBx9i14ht7ebCJEHMZLFGuHHElO85z56S1aIwiFkZ6rOS9pcbJPgjR8gZweqpRkYeQoCy90PlPOMgcfRqRcalC2oXPL3XdN0jZTY4Fpy-Pq5Im4BIbSRyTvSHTUZa0-GdTOyU4MfXcWlty35yYlYtSLyHtjGKjTce802aweNhmj5_XSBQ6YADP3YGqAzYrgRNlU1wfjn_iV8chy1IsFFfxv8nnV3BiFzhvGy8D6U0wS5Si--dSb5URHp7i3fynquoKGcbGJdmzvywJ2hApVT1cPdmCGO8uNjtMb8FJu7XdvGZrgIyrkeOLV4zH-l1iw0oqdmHEdMmDoJq01qKPE20BpFQTzhUdIIhrBrloIoDQq6BSH0QMBTUyfY3YppDdAskNkPnBwb5lUM0SbpPLE1YzP3ivJ6sT4qh1INxEcTqV0xECwQXk=w1224-h918-no)


Two pockets were milled into the Cross-slide bed and holes drilled through to match two tapped holes in the Main bed plate. These were pulled together with a spacer between (to help lengthen the con-rod appearance) and would be back filled with JB Weld. The cylinder plinth was machined for the LP cylinder at this stage too...
(https://lh3.googleusercontent.com/nnAXRLMNWEnu7BD8p9V0-akk1bIEZZX8zzTvDIPSN95399zWgR36NMoU9Ha1m81GLYv7E1GhLCSYpSTCZl7IWzxr-QdbgWLew5NdN6jKs0j7ZtL1a5YJ6WQWIVIwSYGJEsxrSpt16uhvtJqMZcF6mMYF5PPcvRvOe-wPX_PlGVZrCuERRTMIg2Nd_OFxUgYWDT9NduHWVaavDDZsBP0btfcslFvcjw6-EavVXmZUQgVVKDllSERIdNwAkTwk0i9Tf4EIUonGAWlI3EdQ0mbpATBPLew_dd7pHbweSYJTBETYDtkEiZPMLdY4w8GA2TzS7BSd6UR7sHmn6sx0ntb5JxsG4sc5iQLLRI7tNyLtwBHDL_D_cpklkuwxzAjwjpAgBlH07NOSnmg1WW5Qw0cRriU8CTwpH5Qjir97ggU4--pv8eYLQxU80IT-kwq_kYT0UO4nKy8uDvtmM_8i24Wvl4h3lUnCIr8k4yBjLZgzhAEo0QRxhH8oHJRRN0J_5bZ8e7c8D3zM_gBt3Nfgan1vP7p0XJku1V9ADz8Heevre_DEIHCITSiiKPIidDwmNBDFVlGE6PmopHZp74TQPLtTlG2t_fPb3lKdeZ1gz8W2fvs=w1224-h918-no)


... and this is where it had to be re-faced to reclaim the flatness. Note the blob of blue tack - that helped take care of the resonance and chatter set up by the marginal clamping surface. That extension insert BTW was required to take care of the LP Corliss cylinder footprint.
(https://lh3.googleusercontent.com/62pwdkpRQXDSHLeGt6wjJU6QrUQA1eAiKeEiI2esQPJblnr4THBILRFMz5Y62pi3vt46HVo12gkBhZObI5AWb8NV5GP92Ar2wX-Z1LRkeHkUF7TysKWcaWf0zsESZaDDPI4AphB1Qo5HZrhYtEbr5kXPt-njYgyxS4B7G_V96oIFX2MugaBUUpQvf3lpxjS_5ccMXzXTlZw9QRtv0E-ct3U1sfobi0a_zvQkst8YiD_e96MpwEAsaxvwMV5mQzcTJ3AxBmhxI7ItkZQ1nceOpRYgWbrJ7wV2K4ppS2DvQGMEESyyKyeNT6rVvhBlIV5IqeLI6-x3OcqtR3glENInDoM8t_0-BKwZzI8XoX0dEjnlNJ0BUfhbolpB4jTHtcCatiSxTg0rOAj1YbTgS4A0ga9R9Xqa2GIX_JioRNL4bDZ4yTVu8BCup9bjIETdkZUp3LjRAChHFmuA2h2UF-vKNSViuq4XIG-O1XSa4wVhPa7Ifux6ozjdeyGmPMEXNcK5F25RlIUOrX6GxByo-sWQApOIaWap4Rqi_JhinxMEm0C5Vyeg0BrKNrdBSuIBAewpopuGratMQKHUkuQZblaPGBOwZphfw7X3oPcytOzwoJI=w1224-h918-no)


Another area I decided to change was the cross head. The original had a slipper sliding on the bed direct but a decision was made to fit a locomotive type with two bars. This required the cross-head area to be milled away. The two slots for the joining bolts can be seen better in this shot.
(https://lh3.googleusercontent.com/n83W77mvcsGVSbYRORHYSejyu-LkYeje-IQHYk7QlDegeRM8CMWMQmurxqmhXyr4oI7PZ5vP4hVb915e6S7FQtRO1qYdfLozxhjSU4uQxHfTYLEmm8V37aJefOOe_N07JTsSIqTFrBGUca_v_NRcubQ0CE4SnTrfBDUks3pgqzj7MpmwLvXXpblf6wnslFcmZHPb-WRN17FXHZQkO_I2en7jyO2i5Op5MC2lrOQ1IlMY2iga8yyhbG3mOfR-SzbnkKbCIWBy542pU-LLaVYxWnHkvMs8nMxauHLiWR-y7Db8GdULblP7qg1fNTs56Kd7cbWNMxFkVKyjQ5y0m4vYZxSECCS8UvLtXLaYh2wVTixUAxoqegG_0e7eKUX7ZjtJX-Lb-42f4d3ApBaHyqJQ_BTaXieOVxrbOl_z5sNsqQBQkzUfW47JCIvFbGmtzkBkw7c5JI-qtAR4jvUzki8pM7hlWixi98w_f8WkON-mSdPNc0WX6tEp2m5RnRz4K5tYx_10GB2OyhZxyxAmWwZrSnf_5Pqydz4TLlQ9wYvLV1pT0frzXeVc5UY3sIfTuN1XV4ORp3dL_E8zVudxEwTJhWi4D8QojDaoQTJnWoLf_W8=w1224-h918-no)

I think that'l do for this time - more later.

Oh yes - 'Whiskey',  Sue has put up with a lot over the years in her own inimitable tolerance for my doubtful modelling and non modelling meanderings. We even once had climbing wall blocks screwed to the hall wall   :o - yep you wanna believe it  ::) but now the tolerance is tempered somewhat. The Waller engine is reluctantly accepted in the lounge and there's a nice Edwardian Yacht in a case in the bedroom - where else you might ask (case of needs must I'm afraid) but that's it - nothing else but I'm working on the sideboard area ;)

Regards Guys - I'm off to do a bit more - 'Ole' Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 12, 2017, 02:12:34 PM
A few more pics to work toward where matters currently stand.

The two main bed plates were to be set on an aluminium subplate as one piece and the cylinder plinth on another piece. The subplate would replace and reproduce the beading previously milled away. Ali tooling plate is very flat and proved ideal for this.

The two main bed parts were temporarily bolted to the ali plate and once more set up a 2 degree angle and milled to profile standing approx 2mm proud from the casting edges. The vertical edges (in the image) were milled square on the mill axis then dealt with a file to create the angle. The bolt pads have been removed and  the new locations drilled for the new inserts.
(https://lh3.googleusercontent.com/Ct89yCn2b6jkXTsEEBSNuJlEcDyCBwsGTOmFK0udjwG4q2qhdZ8KFTbAPSbScg_z1YaatSI-Go8aJGGQpzFAfWZV7DvX-PAH3e56woKUP--IxZBscTd5UO5yca_g-grP_PAsYeYSML-UXNZM6kkWZs_Ky-GQANjwclFwRuCFTSsGKPlFn1JAYWINBlILs_n9_ye1aVy0fmrmyCC7Xq7rsiqMzJZG876A_tqBXHWk88bKcPFLRgHimPDtFO48x84UAWd0OzrPKn8-KuPVA_uxkLL5Fy6KeO7v6cP3cuLd3YQGXOfqbKISwOd6-1XlIF-b7aomObHdXfyZA-YmPa02nPs1jFMVDODf9hucDw3tfaUGy3J8XZgrLULxh8-YnVsvf4OF98_MXa0WJsiQIiS0T4Uypqzb18IyZZEg_KJFUtK_ha8jZ7OSJhn5tx2shZHXEqLkW3xNsdA-9du21v1WE-0sC2kNNwB7z-xQYWUKXyVVuo22hEAH8FtSTLTfaZFCp5Y2h3C0yCrI1Bi3RMnYW_Xox7VWea-X0qjKvY8XEMTv1Jjz_p8gCHQnEx62qFphnGaaFNTT3mRjfcRVTwDMpLu0r-r6kAYZkMvalQanGwU=w1224-h918-no)


At last something could be done toward what had been an idea...
The slots for the cross-head slide supports have been milled and drilled.
(https://lh3.googleusercontent.com/fztcoHdv3txVwqPzN65oJmKZ3J6VhLbldI6QogvFxpCCnTXLqg-p0YCscZaTpQVgqTVVkPUkpBdePSGTDlmUJtg-fKwOB9SbuCDv8ikH2KS2MuTl87D3oCwoQvrM0ASmh6nT9SmmrNP2mQbN4oBUvrXVOyI7O7UQAtxD7DQXQSjdAXjgiA1NOet-u4aVsO4v59aps8igrtozxiuBbnwcaLriLoAujGKPBhkx9RHwV3l3sFyDKJ9lbBt6cdlWSQkgrjpd8TSsfuTVCkNu4ax2ua36O32_769icEPm91U8BbxqzjbSCkPX8xBeu5bomjyn5bd3RZctUAb3PM3FKsWT48g0f9ATeDIC2FPjeaakJnzZe-u--5b-FcogKaDx_d0Lu7my5NLS005eB8MxoxDgKL_6REkM9isgKeavLCnrGK5W27I4-zfEIiiLCI5N1hXRWIdi4oAugEghL3BotPTjbiBqK-qCdBKr7G5qE9ZYiO7kHO6IfluwChzMXyRQMks9qSP-zP-V-q0-eUjHSWOS6aUE6LJr_vr-TfoAn1GG6MXKBZyCDCQlgsV5_8Flx_XSI0ipH1CFQ46VIO_N6r0Cr26WcsgczOAE3d_jexPlOhk=w1224-h918-no)

Finally it's together, bolted and JB Welded to the sub plate with the cross head supports firmly in place.
(https://lh3.googleusercontent.com/vy53kzuha23Gy81P5gGBXLBa6pjKnUPuVZFyA5jw9Qn4ni3jjQoKf-dbDMkX3q8aTJSE0Vu4iNUVHdyzxoGEZoHfroKXq64zqffSC10r1ZUcaZyYdpSZjC6h5MEnWafZ5Vaq7wBX7CXu02REoq4CoOCEsVquOfQmUQjEuhfySJBNH7rYGn65wNcqH70zCKcck3X68jzX61E7TkYZrnNRel95tmSuaMhuIEhw9V5nICQ3ZvykjXpfeIWXXH8B3qNMva6m7iGNIZJYHFnBL-728fhZH8fHn_y8f9wkSIeyeJTTQIH0gD5YbRbHI7YGIMi1-kuT05ttHr_ihrOeffAsmdGCD5gE485y7JxV3RjpvNBWVx55_84li7RnXOsoN6YE5QXThVx0gnDUngNTtC1rPu9bUtYpk6UuUHaDAj0tMImOkfH4CuYyLXkb0l1dfEVoZhWaY12qqUQxpMqDXs4f9ffGNgjjfOD3xSJirtW-VI1G3WV0URtqrNaTacBqda9vRXfBfyfJmkhEghM0hfuyZ67_V4RneetYmm7g92HiNvJz5cx3mpd9YHeLworGIAFYh_hgOunHEKKdoRlRCOa-dNUCnvb6FIOP0jg5HpqdoE8=w1224-h918-no)

The cylinder plinth was treated in the same manner
(https://lh3.googleusercontent.com/bByVV4dRxdxp4oslf2b2zTYLjh_srxHExag23ObNbtJWEPhNl8rN0WMnsCmCvS93-b5KK1PDPuGvySK_Qr3f12pOAPzJSBJ1kAVss0xDBrpn206-6wRu1YdHTfDuVNh6cnrrttcZAhTSbuVAKf56p1ElkYd8u1r7U6381kQ2CkaaKyN44giWMbWUIPY4IJOxAU1_0JF7DZYzJO3H7MDZ_34YFVq6DcgMkoROPqF_1e40Mev83F2hlDLJkNjibmr_vKbfgkvKMilr6xuzIeGpGJPcjuwRB8np4FHfu0TpEM60m5hP8GiKcep53BV0w52JiiXLUHU2filuMNShsC0hbLDtCnKtWBfIVurWiYDpG0-jbTktd3cdX1Hcr1bcGzSzyC3nVF2rZiXnjAwOOc8ppJO7x8BaSnRxPyFc-pLfVMp4J8q222eE5gyu_ru-xSLqgQ0B4QJ7Evga-pEyfIcZ2z3k_Oc1cC3JK9F7XCsn2aDmwVy5DkMspTzX8axMzw6sz2_LWVwvbg9Yu65OFz9Px98L0j8NY-LAtVo5KdZQdCMggj4AcWzemd7MdQxRBQQnVpzbCHUnFgEZStq3GEmqSfO8vI0GMW8AqW2w3znGlFk=w1224-h918-no)

It was then a matter of settling down with some files and emery to fair all the JB weld fillets and the bolt pads. Once done the two parts were brought together. At first as the joining bolts were brought up tight the end lifted about 2-3 thou so I took a fine file to the lower edges of the ali plate only to increase it to 10 thou ::) Both parts were reset on the mill and the faces barely tickled with a very sharp cutter. The result was better than hoped for - zero movement at both ends and at the bolting face - I really was pleased with that  :) (Says something about my old Linley mill too ;))

(https://lh3.googleusercontent.com/fCFcl9gqP8zJApkeh43Fs7tI_d0WJqDr1o7A3LSYdC10AeAlXxiiHFQv1B2CZ79sy1n6_xwGUOp97th__dc7pHs-iWXSUS2CdKBBnH1gCf64qX23Hm-Km2hsUUfwjgKdHIzotFU60etyYTvYcIpmDo6ZFo0RDuuvCwXytwgaOETO0zkg7PWjnQGWA6fFuQo4XBYBxYRBBpNmJS1gtIke7FG916gRNQl3p4t8oDOQaEa6Y5My9OKAO6DPeOvj8QxKUIRX6VHbD2J-wAaJOTYzKqALUrpZdOS4C3FMljgkNieCLbBykRAfIX-P3pEsHZhEiLwQPN_IbZRREprvMZNQlqozbjNtdB1QDECHF7QrQdJfjSlhrCU9_cc-YVpNN2g5UtcWf2mPnrK_s838r0Y26NGZH9hZw_PDJ3KQo22A33FRrDC4hvAISD8m_8BtcFsZxjJU15Rt5l-xoU_cijGB8zweSeSmk69q0eUmbdmBXLdnAAkJZG9U7NfYKXnh3MFT9X_sGMUAmDl2khb6HvJjNLX5jHKmXCzkWGDKXhdd15FKx6geMQYmVzkz4TwIKj3iCj92j7-x4mG6RVBvIaP_8vPIkGqIA48yh8OdJOE37To=w1224-h918-no)


I think it's best to keep the posts short but frequent until we catch up so hope you can live with that  :) - as you can see in the background the cylinders were well under way at the stage described so perhaps something on them next.


It's bitterly cold here today, the car still solid with hard ice but the workshops warm so I'm off to finish the eccentrics  ;)

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 12, 2017, 02:44:08 PM
Geeze....that is a lot of progress Tug. Please keep the pictures coming as time permits, this is quite a build!!

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 12, 2017, 02:48:45 PM
Yes all done in the last couple of days Bill  :lolb:

No, not really  ::)  I began in earnest on Aug 28th this year so this is catching up. What has surprised me though is just how much I'm enjoying the machining and just how much has been done so far. Novelty's gotta wear off soon though don't ya think ;D

Yes, I'll keep it going now ;)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on December 12, 2017, 02:57:55 PM
Thanks for the updates Ramon, nice to see some minor mods that will make it your own.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 12, 2017, 03:54:01 PM
New and interesting projects like this one Tug, keep the novelty alive and well. We all need to take breaks at times but the lure of model engines of all types keeps calling us back eventually :)

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 13, 2017, 11:51:50 AM
Thanks Bill and Jason,

Yes the idea was to make it a bit individual Jason, I'm told by Terry Fleet that no one has done the Tandem all Corliss before but somehow I don't think that can be right - surely someone has by now
I've taken another look at that air pump casting and the more I look the more I'm convinced to fabricate one. It's not that bad but I don't think it will look too symmetrical at the ends once machined - we'll see.

Lure is right Bill but I never thought this would ever see the light of day - just goes to show I guess - never part with anything  ;)

Best - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 15, 2017, 04:25:57 PM
Further tales from Ole Tugs workshop

A bit more for you  :)

The cylinder castings proved quite an easy machining task. The HP cylinder was as provided by Peter Southworth. One foot was cut off as this cylinder abuts the cross head bed-plate along with the two protrusions on each side. These were intended for reinforcing bars between cylinders but it was felt that they would not have been on an engine of the size that this model would depict.

With the top surface filed much like the bedplates the lower face was machined leaving plenty on, reversing to machine the top and finally as here turning over to machine the datum face still leaving a few thou to clean up after the bore was in. There was plenty of machining allowance as witnessed by the scribed line.

(https://lh3.googleusercontent.com/JbdOqH7wURpeYon9YMrrnIJFfREO2kZfLY1qoP9YhiFBfkHKOweUO1g-kxQ8VfYM9o7G37zhCS24YNthzOldJAtJhp934wfEB5oP69qfShnkYwRtbgllyp507fHI20pteCGq63OZbUce9cO7-ostQWo_dkePKrfNQwPjXV9UoAp6DWr-XJOD9a34M5DgbE2vjhT0o19wDhGhG-0RlC4tLHh9wFJfOxuQtfxloCmvR_ZUwYeqOIC9Lly4TnhnmjvEPO_rW5uor3_F0hxhe_t1L5te1EUAnphD-DHncW9QvPp3NN2Z3qks7LXW0p238kCT1kblG7H5AX7fi-vf619RuDJgke-s2Kw8rxubh7_PGPjRXURH58LbPp9GgkGnqKjbDOzERstEHbypijXnDV49SvgUBAqdjpVoEfW35bM80mIBMUUG_RbN8150rDCkcb-N6KKOwX4rCGTb7148rxEaXbBFpYxscMGV0DTD4IVVtiHo1AzDZEqeHJ3PltiwL1pfWPTUA-Y8WfIqwMRzsd_7mWtfNWa2FV-NbjWt4iGtc8pbunere1VBlybKXOe9FDuG33vVgI9-g68mp5oi7nUxEQxeKZc8zSlHu6tffVsyRQo=w1224-h918-no)


Both cylinders were done like this but the LP Cylinder was machined from a block of continuous cast bar. As said previously the intention was to use this to create a slide valve cylinder and the bore had been roughed in whilst still at work in ’98. The decision to change to an all Corliss engine meant this hole was out of line to the base. To cure this the lower face of this block had a 8mm deep groove cut through the length of the block leaving 5mm wide sides. A slab of cast was machined to suit and JB Welded in to increase the height and once cured the block machined to size all over leaving the feet at each end. The small gussets on each foot were cut from cast and JB’d into slots milled in at a later stage


Both cylinders were bored between centres on the lathe packing up on parallels and shims to get the bores a few thou higher height-wise and dead on centre width-wise.

(https://lh3.googleusercontent.com/oqql_vkNkM5yDWKp8R7yyvntxYhIeP8y06qFGe3jRyycpXxjrnDlDVx8rs_aMVOxb5rVURoCTNOPvuH7NJ1ydXKVzRRhjhAemTfzjFa8MpYMxd1Nb7LRPpD7HHaaxBxd3_WbRrbvmyyP8h4j0BQ6N0l7kXfP-g8Tv74aYbuOlwabhgIZH3hg7Jj-HUjE2hf8o2FKOgVDCea9RjuQjtYUWn8oGjwcDxxARAC-YqhTRzr0BGJO5GURg0-IAQpYe1kiF6YupGp-FrjOZVcrlYUblGcky-9amMKafKjDtrfslBUNponBDOqlSHHVScPuLKYVBn2LphRX4EqbRLly847oLMEI4N2OhrINnNhP2zP2cbVOXTA-gdxWp5Q3iL2-bLby4iEiHHNyZuiS_xbR5bDs_qCF7sgmFBeycdzOiFZjNBJAwd_fQdWXM-yjEfo_tbOm-L_wd_SqUyFPcGbl3JkKsj47Wa068V_7ZiK5gc_5tUC59CsH_u3GN7hw_Id-x8Sz8bNFfhUURqo03uVLC8rT6GoSobdacFKPShZ1VVQUt550s7c2ZL_ROEhXUun6EJyeVbddQHhtYJBAAombuLwn-S8SIDoPNcVOSBQNrsYFmHs=w1224-h918-no)


Once the bores were finished, the lower ‘datum’ faces could then be tweaked the last few thou but this time to the bore to ensure both bores were dead in line with the lower face and at the correct height on each cylinder to accommodate the two differing heights on the plinth. How true wouldn’t be really known until the end covers were in place and the piston rod fitted

(https://lh3.googleusercontent.com/Op7Md_v_nsM2816YmZX1GZ9c0BwC8jXDLd3UaDpOA_OLX6MgwulYoi6bGxM-pwNhzD2keagmNntV1Da6hPv211IQ_I6F96DruQMNlIfGr-006lxttRsyhn0XArWs4QX5ptXIyMIIusNr2WkE6z7vKP37D-lAvb-bZU-ciI4VnaeFwSvAu9mwyhKdMbTkUuYFHNKpwjnsH74MpnzmxJZeHKsC6UjnAX96aLgapnTr6NZ1hnmpt_mOxyY7q4tJh3obffmZ4Mzq1mBGKWhWu9Z3Tj5cyWqoJGOU7aePUWqzasemqqy99OsmncBJDIc04tFG5LVSmfIfyxH_WIKbeSTmFlQbiIAjNjPdiUifzsQNNcgbkTC2G6Uu-VNAJ91g2lgyZ1xFTNJiJHYPpWx7rKcupLzhoxqBSjQajiHoSkV6SJ_PsWDR07K-01HU88XIw67_UH23JL1XVR9qb1ACHzNp4xpL7VM15xZ_G8M0psrdxxLyRkKVFSKoSVFz729mDf3kaorT11dBCcnw_ifd82G3nizGaVXQfSMtFxFnbG5k-yGXR53yj0h3UNXUXSEthzrpA--baYM82y6YqQqT2P4FhVRhwyG4Cb2tF4LjQbH38JE=w1224-h918-no)


Machining the remainder was basically straightforward, the valve bores being drilled and reamed with the blocks set against an angle plate to ensure squareness. The steam cavities proved an opportunity to try out the new mill with a big (for this w’shop) cutter which it handled with ease. It may be Chinese but it did, and has done, all I’ve asked of it so far both with power and accuracy.

(https://lh3.googleusercontent.com/VD3pZkQeGvr8EnfdxtM-So6o9SDpzHleVFyJ2YBWZuVWBELkRlfNaU2zOKUuk9Iirw80-jQ3niW5-O2ziQxky1PegUN8aKy2TkKFEj0q7kk9Ngrg0PvrrPfEkMzYxefIb7h8k04zUdUy2IbBhCdOoeIniJrPsDi3iEpHakkP_A0-I543Tt9sz932VhN0VJ7LiMbuasVvRd84aR6ed7k31PSgmMQHxKV9KspNHfm5xN3NtWE7Np672C-BBnXJpQyJWsi-Bb4i-kzQSBaaoIL4rm7mBK45wE0mHrhQsxLnfPMpGeqjNd4L-Vwx39IdcOiUnY97upka2yZpIZpSxx5wqMorzy1yF62wI5UPtQCJQfJ1bV1CIAY50kqCqlLZJzOzxemr-QPgzc0fupXuBXscoE4Ei0TIbAmAMi9fLId7YIpFITT_YVJKJbI7yfn9__5su6OvzeuUKMNpXOZwn4dQS2lpSUfmB1rY8W8Bav2K9iVd9UMgMm0UCfAxorV9FGQBIKElWJ144lL7HEU8hYeApSzp_cBH3B6f1c_49EgFPKzRirveTcLTV6pT8u9gv1mAsbUN5j407Zbi5AJKemoqoX6Y0VNYlT6gpoTspFMWGmU=w1224-h918-no)


I bought this 1/2" radius corner cutter a long time ago for just a pound! Specifically with this op in mind – money well spent  :)

(https://lh3.googleusercontent.com/RXDgDcysZJAt6DH4mqvXJCRkSk8k5_M92GiMg5ci9M8w0G-jJlUgSkBSOpVxeX289b9Ofaxemib2kT9Tv0YxVRhFscr4dmsrxs-a3QjKKZewAfbifGktfXokenjWRsAlRKCsCvgAM03Wvscf4ISE1rpJWbZvzQeXPw1hSewZ2DimXgz04cTgqNILjETY8Ib8UY1hjb4eUptUcGSTTigVIDay3jorA_HaA46xJIgI4_DQMNXaWj1Gvg0HXxDGWGuxopdtjVM0sGa8yUtxcE2dkdyLndxIWtGE2dn-t9ZoOLriuByEMPPZ1l8R9MPpU1nBw7JMxh1Uhlo87VDpz1ict4WXEkkSdws38nt3Oy5Lq-dobjlJSdocuD8rYUqEZ62I_Pa8UsLBbJSaiCgB8sTWbFLiuarHDN7E3sl2MXKNzI0xc3Sfkw8w0b0Hr0wjgxu-fNXsCpatSXYPh-cFPCtZ41LjtXCDBaUtvQ0ukpwUm3sZJfgVT1E6ZtkuQQMPIO5jpqYQ1S1dIzxJ9pj0CyRgvAnPf2ADUyCAgVI-eyPcxYhphqfGPpFwHpTIepN6pnNC27wZfieWFUDJvdRMsXRb4Y3ubBQbsHrJdoBUpbF2XEg=w1224-h918-no)


There were lots of 5, 7 and 8BA holes to tap and these were all done by hand by supporting the tap lightly in the drill chuck or in a brass sleeve held in the chuck. As described on another thread on here the drive to the tap was by accomplished by grinding a small flat on the side of the shank for the wrench to grip on. As the end got closer the anxiety levels increased a tad – only a tad mind ;) dreading a broken tap but all 200 plus holes in each block were finally done without mishap.

(https://lh3.googleusercontent.com/69LyUPoq09sPgouSYDLJ3W8wijeNcBmVElMVxAjGDrf9aNk2nnK6KcWL2YakYIS2X1QH0EbjtQG5GtFbxeCPdudalGskQ0V5EkQNVTGhPoZbaXmIBiIGPzvrBEaK76jH77GHUUef6NL7cNod49P00WQuS22XSQazj0KvTtjkaWq5mm0fd7DWUmgnUAUki70S8NRKynncVd87d7FMvjdQn_y_97dCcWYcmZm3u0DYDW7v2iLod-8mHQZ8DnHrUJfqaddeDdqmC0gKNCdzlVDml0ne1lpmU-t_qeVD8_ig4tVn12FWNf8TVdJZrE1iqbAjZdSVuyuE0k5QwXpjIMLH_J5jn4FiHHefSZ-mEOv51iShg_qpYAjLrntZcup7nqh5vE_5Uzkx8GTzPfkZ0eOzZxsQUhenyffhpTdFPjdfjqVci_k-C6eDbC8AxRDY1YJ_Q_Wj_El4n3zZK_ZxyuuyE1-Clcd_DMuXIXk_EVV4ZROnGe81AImT-mpRS2c6Jaqo3-1P9jPruYrrzY4wLNzuBT026hKPCb0_NKwTYmSWITuxlxYIk90K_rirlklVcQfCHLWJRV51fHLXi0XEhN-54UQ8WMpubn-81eAV0SHUPhs=w1224-h918-no)


The inlet ways from the steam chest had been milled in using a Woodruffe cutter but the steam ways into the cylinder required a precise slot using a cutter of the correct width. A simple slotting cutter was milled from Arne tool steel (equivalent to GFS) and the tips backed off by filing. Heat treated, quenched in oil but not tempered and the tips touched with a diamond file it sailed through all four places in each cylinder without a hitch. The cutter was set to each position by touching it on a round bar protruding from each bore then moving back over the main bore and lowering to the set depth

(https://lh3.googleusercontent.com/PWq3RYG0xLSwptBuvperlAxR6EW1___HlGVYOC1N4UBpx0Vakh5koKcZILtM2vm1W1ARDrzEeLhW6fTBsDW9B56kIZJ5oKKjrySvjyQCgcTWuAPe6cybKPUSSn-0A9J461fOp_ES0-B_74NTtNYZ5i13xEcIiiBJHQObmLyiowEJVyVn5I2jgZnleZTrsznCAnuXWGYnwofjD5EgABUV6x53T2xY8etyjfSAKFDz_tQHE_kngjS9b8RPsR95-yihGq0ZX6fjsbYxXwbAZ5UJRvGSMkQpPHuwaPQ4LVkaQgFv3V9ucnEcsTeRftnPbXWIgQtnVddSbv_582-bvy3CYIs9eyadjY8GGjD9NmWObH78u_GDXTGy6Hv9OoU59HQ4qIZduhN9D3tZAR1motJRbbqE2ACkVNswstuJyelh7VWMNw9c1xIg30nSR-o3ozkGhjxNvW5Hw6HNyeTaDS7ST1Sg-gWlB8NTA6T0F5J30L5H4stqqcx8j7BJkTJaiomljziC90_TjqZGHNPeXD_Qfl-R3BhSpfQopZB4xLUEHhAIy8TMnNxeiwc06aKpKPvQceSTYOPa7gHIXauCB-Ud1tJO0kfyEkLMdpO7DVu959I=w1224-h918-no)

(https://lh3.googleusercontent.com/-GmWFUiisxdaV6PpDojUdXCovc536UavZGgqSTEsnJSSbbWUEkj4RzJ_yuRryxi4Dkt1dfOTQr_NhT5VtA8w-b8LjGUeW0FJqkfx9wx9brZwP6vXnrIHxsCBU7EATRVNxwfe_DRUcn38TtxAQjgFf-1GSdKHHUObYFcVE_HHn6ZEbaOHeAU39j8ywYutFkBk-I3xAWM3YPhOEjYP0BqgLoMX2xHhXxnQncG7jUgDi_I9CbZ30Klp8DqOwg5P_cWsgsfwJE92ywSxOil1tROn1pf3zT63E4911UVMpZ2Rbb1x47J4cVD2XuhVu8-fjWnZNTeapqkaClCrXA4VgLZOezOvwPQ5zB8VMEvnljtcymDoElHo_3E515mzC-bO09dfu04szWtYgCUQYVZCEtkPSWCwj2nMnfCum54zM8hp0WxDKD1zysVfcszy3hmXkGiDiDM4UXRy-z29_rqNPoNXx6mNgpfVyQPUGlUuXzC7wW7RyPI1-usvUxzWP_gpB-ReFU9LVfowtMTX0bW9SxLxEIdK1GZAI0QtkFBEVl5yI9SOurNh7P9UZXIuvSvbWOT07lQhsw0de31aonFUN9S_wHZ_Pf_kmA3DYrSHM7Pre8g=w1224-h918-no)


The sides of the cylinders were relieved, not for any specific reason other than it seemed right. The cylinders will be lagged so this wont actually be visible. It was only at the last minute doing this that I realised something wasn't quite right on the LP cylinder. I had made a note on the drawings that the C/L of the lower two holes for the valve lever pivot was on the C/L of the bore. Misreading my own notes ::) I had placed the C/L of the four holes on the bore C/L ::) ::) (age thing - has to be  :facepalm2:) It was easily rectified by milling out a 2mm deep cavity, JB Welding a slab of cast iron in and re-machining and drilling the holes in the correct place once cured.

(https://lh3.googleusercontent.com/1TBoXj7gCCzeLiWUhwVLoB4MGyMKJNcgH6qa_WoLCTy7nqx_51vqaSnFjvTNTGATnM4aFgg-ffmKvlgDtoJdJryCO5p4Cu1qleGQa-KFEO3cLZOHwwblXnxEQCeqijxtBjLqKXfYTUeQ2VorpBG3Jp-C-MDINQGmh3caHgrKIdhOWmpnoasq-DhwhMr7UTnc7XKho5c5e12AybXc1eWNmxkdA7hFZ-IbVYaUxsJoIHdovrEGR8WLfXj_tGmIIcBzM1ySDEGSnFp9ziuPaNiDDBeeNTZzHdUpRXbGjM8o2crU0_nXo4ERrTPykCsMNwH5J7e5sX05pTMQvGAa8KOjcy1W0DP6qW1rRN05IpOUH2t-wlfnfBa9BnyWePd_VHpwE1_iwo9ufTl0oYWCvuMtkdXCxm-Ci_jnYw0x6R_juW24BFg-GKxdQFU3VlvgdP0AHnGIbt3AevyrQrZdhOvcTQTkyoH6s8GAmo1eC8vECccA9exFx352TD8nORktxPwNqAzeNcuVGwq0kRaDDtOF8tJHJXc5Lu9Kazsk7KVCsuBH_-aVOrxGDy6csKKknTzO4L1_mGKbqR7wQwetTDsjSPZOXhJQGF7dFlZQ6roGnpo=w1224-h918-no)


With all these ops out of the way work could begin on the end covers and glands and finally fitting that piston rod to see how it all aligns but that's for another day.

This is taking up too much workshop time  - I'm off to the comfort zone

Regards to all who look in - Tug



Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on December 15, 2017, 04:51:28 PM
That corner radius cutter was definitely a good buy as it's made a nice feature on the cylinder blocks Ramon.  Thank goodness for JB Weld though  ;D

Enjoying following along,

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 15, 2017, 04:56:02 PM
That is a lot of work for one part!  And a heart stopping moment when you realized the holes were in the wrong place, after all that tapping!  :o  I'm glad you got that sorted!

A quick question if I may.  Regarding the slotting cutter you made; why did you choose not to temper it? I've always heard you should do that or the tool will be too brittle.

Thanks Ramon!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on December 15, 2017, 04:56:23 PM
So how long did it take to drill and tap all those hole? :lolb:

Just pulling your leg. :Lol:

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 15, 2017, 06:41:25 PM
Thats a very impressive bit of work - very nice!

 :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on December 15, 2017, 07:52:59 PM
more wonderfull work as usual Tug, even the slight mishap with the hole alignment has been smoothly rectified.  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 16, 2017, 10:01:46 AM
Hi Guys - thanks for looking in and your kind comments  :ThumbsUp:

Yep Simon, JB Weld has a lot to be thanked for  ;) Guys - Simon often pulls my leg about me having shares in JBW ;D

Kim - I have made quite a few cutters over the years many tempered but the majority not. Those that are tempered are usually tools that will see potentially ongoing use but those made just for one job I don't bother with. The main reason is that the hardness is then at a maximum, by tempering  such (usually) small tools the tempering, even if carried out carefully, can be a very hit and miss affair and the desired hardness quickly lost.

Based on work experience which I'm happy to go into should anyone want I never quench Silver Steel (I think you call it Drill Rod) in water which is usually the recommended medium but always quench in oil.  This does help to offset cracking especially on small cutters with small section teeth.

I've said it before, but for me, one of the most satisfying and rewarding parts of this hobby, is to be able to make a small cutter to do a specific job and see it perform as intended. It never fails to give me a buzz and it's a skill well worth acquiring.

I can go into it further if wanted but happy to leave it at this stage if not  ;)

Regards - Tug

PS - Vince, too long I'd say  :D - I took each as a separate session - side holes, cylinder ends, steam and exhaust chest and finally those valve holes - I was real glad to get them over with though  ;)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 16, 2017, 05:59:47 PM
Thanks Tug,
Your reasoning makes sense.  That's why I like to ask - it helps me understand the more subtle points of our hobby when I understand why people do things in different ways.  It's usually for a reason! :)

When you say you quench in oil, what do you use?  Just old motor oil?  Way oil?  Baby oil?

Also, I've tended to use W-1, which is Water quench Tool Steel.  Would it make any difference to quench that in oil when hardening?

Thanks for the info Tug!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 16, 2017, 08:11:47 PM
Hi Kim - I think your W-1 is similar to our Silver Steel in composition though I'm not certain.

I'm not advocating quenching in oil  as the way merely the way I go about it based on a fair amount experience of heat treating of tool steels at a basic level at work.

For several years I ran a small machine shop supporting a factory that produced push on type electrical terminals using multi stage progression press tooling. The machine shop grew from just myself making odd parts to four persons and gradually took on and over work that had previously been sent to outside contractors. One of these was the heat treatment of tooling parts.

Prior to doing this the odd punch, die or cut off blade was made from Arne B01 - a GFS equivalent or indeed GFS itself and heat treated just as we do at home. Proper Wild Barfield ovens were installed however and the correct in-house treatment of tool steels began in earnest virtually on a weekly basis for several years until redundancy closed us down.

I remember clearly the very first batch that came out of the oven and thinking immediately that we had got it wrong - the 'colour' was a very dull red - nowhere near the so called 'cherry red' anticipated. It was immediately obvious that virtually all flame treated parts before that had been much hotter than the specification called for and since then I have always been very careful not to quench if the colour is too bright - waiting for the part to cool slightly before quenching. We used the correct whale oil of which I still have some but virtually any oil will do.
Something we always did in colder times was to take the chill off the oil by heating a small block at the same time as the parts and dropping that in the oil first. That was as a result of a batch cracking but it was a very cold overnight temp that had chilled the oil. We never experienced cracking of Arne or GFS parts after we did that.

At one stage we had to make a lot of small adjusters with a hex socket formed in them. These were made from Silver Steel and quenched to the manufacturers spec in cold water. Many of this first batch disintegrated in use with the torque of the hex key so a decision was made to quench in oil and no further problems occurred with these parts.

So since then I have always quenched silver steel parts in oil - there may be a slight loss of hardness but it's virtually immeasurable at home and has always - for me - done the business.

This wasn't 'high tec' heat treatment but it was carried out in a carefully controlled manner to the steel manufacturers specs obviously including the tempering. Tempering at home in comparison to doing it correctly really is a hit and miss affair but when I do do it I always use a container of sand, pre heated so the part goes into (and under) hot sand and slowly turned and constantly checked for the colour growth.

One thing to be aware of when tempering by colour is that if you quench too soon and decide to re temper to lower the hardness a little more the colour will not change from that resulting from the initial quench. You need to remove the colour by abrading ie using emery/wet and dry paper etc back to a clean surface before popping back in the sand and re-tempering to the new colour desired.

Hope I haven't gone on too much there Kim but hopefully it's of use and to others too

Tug

PS Just thought I'd add - I worked for this company for fourteen years - it's coming up for eighteen years since I left  :o
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 17, 2017, 12:30:55 AM
Thanks for that excellent information, Tug.
I found it to be of great interest, and I'm sure others did too.

Thank you for taking the time to write such a detailed response to my questions!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 17, 2017, 01:18:37 AM


Thanks for that excellent information, Tug.
I found it to be of great interest, and I'm sure others did too.

As did I Tug. The use of whale oil was a new one on me. Definitely hadn't heard of that before.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 17, 2017, 04:54:03 PM
You're welcome Kim and Bill, glad that was of help.

Bill I don't know where one would get whale oil these days but I'm sure someone will. It's not that important though as most oil will do for our needs, used or not - at a push even cooking oil will cope. Ha, I bet Ole Whiskey's got a pint or two of that going spare  :Lol:


Work steadily progresses down in 'tha ole shid' so a little more will bring us closer to current situation.

As said the right hand engine parts were exchanged for two new flywheel halves and the outer bearing pedestal.  However sitting on the bench for near twenty years was 'one done earlier'
(https://lh3.googleusercontent.com/nzpLV5QAhaVn1Q9579_NIGknnnlU5nPOe4oTiuYoY3Y1b9P8U21Y76-Zx-QbR3h0v11Q_m0CRsIQk9nO0n26APmPOxzzoxzjOhj9Uf5wpLLHaygir_PrqH10AD9bOdwbsO7JbxMcW2Nl4G0PjC36-rl1iwrpja6c2IK3t8JgnkBhze4uZTgY1koQu35eU2WSS6SOVfaPp7L4o2phT5TgTWdA2IPDQR2hX9rVYxMHvaMATuayDlx9ijD6UecUridVEUZOKa67DGu5V0D12yJG8kL3M82NsDhS7JNKNqsDFwvho8bldTOJd2bxrRm8wbrsvIc6YljF2EmbKkihMNuVJy3XSzEU_EI9srGEbDA4-DrHCP3FQGb6xXoDztnYuDKMEsnSbVM6sFKsaybtas1ZBRj00aidTAX2S_JHAgTNcXp3lHAfxMnaEW4Yw0NNjNyKfF8v7a86g20zWamZppiufxZdqnAnzRLDloloKb9TtBKdeUxlPDodVoIEIinuPgqBO-ki_XwDmabGZXxxOk6DPkT7sH0_D-edCcOVSaSpvsNNynlWpvIIKxQbE5zPyIkjH91_pDKHUjKBvjNAu1FR3YHaf_G7L8PvlD6pqfReFtg=w1224-h918-no)

At one stage offered for less than half the cost of the castings it was met with a rather ill considered six word reply of "I won't be buying that then" Needless to say after sorting out the packaging and a potential courier that was really 'well received' and precipitated an immediate 'well there it can stay' attitude (well, sort of). And so it's sat, redundant until now.

Bolted together with cap heads it was thought it may be possible to cut it into two so it was up on the new mill without delay. To be honest I did take a big gulp before touching that cutter on but it just sailed through.  The  cutter was initially plunged in straight till near touching the arbour then moved across the Y axis. Once cleared the 'wheel was turned  and the next cut made. Little packing pieces were inserted to prevent the top half nipping the blade toward the end and on final break through it just sat there, the cutter ticking in the slot.
(https://lh3.googleusercontent.com/Jfvpx2VtqmmZ4qxNTXBAbl2CrWQx9o8Cro9mQ9iO-h3N7DQXyOWMnZK8DtGWHjBxRo6vbrJQ02LyDAEBOmkzzkCLN_WTNqUq9mC2tdX_rB0mFyrkcOGVg15P3Bf5CqmTh0f269lESZGflQXW_DyPgb6dUEGuVUm8d0ODytb7dj9cdKGBl3bPn1vNSjZe-siynfxfBo3ypvoB2rpf3zDDT-j-6IpHepi2syNE1_VCqr4WUwG8T64vV3GFtqeACfowCSxFjhqnSkO0kQ0mdEYvTxqS6k3SOrsEex1NS2I7sDjjcfSvXZw3_K4ZUePLYHu_asovO1cz9GmuinV3rYfk7xp52c-z7kdoBI0qBfWcZ0V4a-T1sdS0XmSYzdpwpn2q7l_HVy5XGLR4I7UJI_J9cNr_P4HGgXeLEx4uxuGBzKtpkunZUDpBSf-wew5tobCyprYAWSTFaK9TMpfCzfdMvitlJvnFv_O9ebcnH6nKsYtUUH52iWS1oB9yqDqMjvCa2or8wbgeak2FPgGtoEiKpz734NrKntM7eTPD5K8psUBwiv1bVHXthtn154q5cvRBsbAp_gx6NqVq-H8pTt7YMx2dw8lB4zG0If9WtnKiziI=w1224-h918-no)

It's held to the table with just one bolt through the lower half spokes into a tee nut. (There's a space between each set of spokes) The copy paper underneath is to enhance the grip - something it will do immensely over metal to metal contact. I was expecting the saw to protest as it passed through the capheads but it proved unfounded and the whole op was done in very short order.

The original join was a 'step and register' type and there was no way of knowing where this laid exactly but it was hoped the saw would remove this and this proved more or less so.
(https://lh3.googleusercontent.com/ZhSC22p5voQJwEBhLXc2gQ8h98c33VsUu9rvFAs6g8qv7YbrsWnp_BFQUYOUiypr-wKWHRriyq_Fo2SR9sVI8KYoz8fBvojECH4DGfD2LfU8lGikxMmdki1lT8W5joVrZR3RF4C5khq29kmOsw6JgpLd_rkzwki1VqV1pbHHrXWxgpezBdwwE-KBS0J0WGidnpjfaCa17m82jeFmZtYYrJOE7J-CSwTf4p_hmGtVWkSyyOHoxnSUXNa7p5ad6uaJu5JdINvTHmZH2T8qfBQrt3VhPCgnycEoMcu7eggr7MK2OKzZKyx3_wGgyi0q24e2ukrNgvyLQ8t1nCFY2-57F1zLfYsLCYJqmbqzDdJa3y970wd1rrwqRDgB1QoRcqBXzDk-jEt1nl_9nMHR9Nfsly1uKarN6ylDpL-An4NTRSLjUc-2TvSL2RSoHs9wcaPNPe25DueK7W5xfPaZb98t7AVR4267uuDhokPTYHvkh9Q64ws5nV5U8AfAhE9HhvSYF8mDhAv_DnI9nhqikwCs-RZdcoujIeczsQsMVNZb-SHJnq-ZDd1bUHWtfHe90m6d7Fc_K19d_FfyWTGEA3jlp8eJXE8NiZD6em53mY79o-k=w1224-h918-no)

You can see evidence of the join in this image so the positioning wasn't too far out.The cap heads were dot punched .....
(https://lh3.googleusercontent.com/Ljb2zgGv6HRiHQDlUbS8oTTAat0BJ3IhUrgrtZm9M1OW8UBM5GjQYT3nziND5tc6mzfPJ-2efqyEHsWFxa2NmM5oS2e-0yGSYbyFlvH06QL2XUW2FzUrClgSIkubYok5Xlj0RKgHSTUtZj2LDiLjUh_KHpaSGGGu6-1Cz37WtljfcidmSq7Q_xjmgYEkBy3bqwvXy2jViFKytEvpcSCiUQWwQG-oMC0ZN4yoVmh0a91nSdBD0o_1AoZjdVHm_OjGF2nKf2Coz-XszwoeJq5h9YAaeyN_HHHGDPggP0XopARlCki4SJru9o6lNGTCJ08AMw99AVBA_xSzaV6EEIQs2EiCVbJJUQ8VRJ9eZXvGeheZ5UTrIMlz5DB9IjOHEMTIYM4Cimyvl_rAUDEBB5LKiOcg85bDWDhXycAObnOS_XFwtQ_8Sa0Ay1R2S9ro82C35NaOw8Rmf2ls0vkHBGA7WzVVRRwSEaHH9Fwk5xkswy1BLGoTjrrxtuGV1SeC-7dw5x24PWUh_2rqQLKdPSVB8hjsIdvMf2l34iALGGBUvXASXWVNirJbC7fZknxVT_GrL0Io72kp10dMN_wQQ_YE2GUjFY5yAe0MYXUHnHxuFK0=w1224-h918-no)

...and drilled out freehand.
(https://lh3.googleusercontent.com/zpE1Uv-2WtvU7r5hf6p8DpXYmdIsdXkj_vCs4xzeN6YrCfhVk321qS_hR_uQL_raud4lOBHxyFGKYdfoRgPq1DNriOlKcIeZtDNMVuGIlgxTuqrIcKd7ek0-0zCQuaiHDCYk-f1ZiqEqYyykKR2yzwxFXDE4VovUXJ2tWtRI7sH7V59kfIfq59kfyayZ9lqz1SmeGPfi7oVtHhZEPw6DXJntZqyqT4CpnSNnOWxSjJhXHuHmLMmvjPE1UF_HS7l4VIuGBg6WGzTXICzeq5TD8HF_SHV2GdQdOTdsXUJw2JqI4ErDGVderQkjqTdvC3btOwB069dq3iJR_PK7rcwVfbzRbo9Yb8XnAhZq_HqLuRbw1_HY5I_2kgAvSpxxTWY7dOFnwZGyp38nLzUThFx-HdG3obXrKThS5KjiAOeZstlrswv5oOOsx_myv9ppO3WzgGku75RrQjkLy0FRsKJcJGW_KqQVeS6CxVGvTwojhnetSCtDfs4VcEPbEC3qXR2LS02vNDCIcDmTBI3KS3Qo7dwVPVKWeOnNZefmF1cQvmucpa2h1H16zeYtoCHxhpRn7qqTJXg4Ov16UpB0-Yt3HsIbQSaGvpVHk_NR8qfw_bw=w1224-h918-no)

Cast iron plugs were turned, Loctited and peened over ready for facing off on the lathe.
(https://lh3.googleusercontent.com/U9CXRf26cPWrr-cadU251ybpH-dUMUHC4ivLQnzf9Ux-ZQXQ8IYCyJ0FMGVsQW-ZrZR4yuL8cuniPzV5Y8cWJ9gzxr2YHuCW4-a_NKvFj8wQ1Fk9J6-vSYv-QfbLaYBNcrEkWeDam2I3orRIoAbSigCfJIVNUQcjYtgSb1-SzXCE9ACD52r0ggexL6EL8swn3KhPsjLLsY_-zXG4jI-0fS36-Mm1geSnbmO93FhY6MqkzCtKMHNjLWP4IUQ2TliizaEtvG89p9ohkeTQSr3yNofE9xH7DHF9KHyO3VHx373D2hFfqEdOsQ9r8OTSDUGe-O3Bo926L2i8qqMoGMNU2mFFW_k38xj80XkwSZDxr6ZbhT7qOe20lVbdu73_craKq_L3qHIX4Egj-lhEdXvIpfHwH8S6Nrz5_NJmLalYTFZjUh2IOR5W-m73PeEbbZEeUksFPuAEC8CQL0KvZqC_GFbZY4VqcldrTW9dJkigaLCHQ1nBH-xMnOXzwE2VVPXAqgy1aJc8ruAlAHxZfYCQrXWSBEREb6ZCRLGd-sKrLmrZrrrQBfXBNGy30ODHQ6xUk66rPsfmdBPuNL7qxhkyqCGZS4fg0rK8QlKjdxcshi4=w1224-h918-no)

I knew I had done all the turning at home originally but at first could not remember how I had done it as it was not possible to place the wheel in the gap with the faceplate in situ. It soon fell into place though and the first thing was to turn a short plug that would fit the flywheel bore as close to the mandrel nose as possible - it's bolted to a Morse taper held in place with a draw-bar
(https://lh3.googleusercontent.com/U-ipesyxnvFeUEkzTq8xEhs_0NBQpMCZ52slXvvgWvaPizF6cZYzNvL0wgbQbi-5BbirBbV6d9ZNQ2Rf7lYyh_n_Jlyi7aLRTXylJkhxf5WUwVcS6SUDk-kSiMtUKy4wba8NsfoKXiNwqY729dKT6zjqQ6EvBNb1lkNhx-7skfyWjnlSxV84MCiou_oLJTuAJmYZ72kmdU3eXT7fy4_5ctUSnE1EKxoRmhJ0QQytj8LqJKl0c_TbeEH_MZHZxCO9xyvIJ5GbdTaGcgdf1xd97lqokIBKcV4CXBt-Z0Oa00iOQdZs2eUxS99JSRG5XOJImhjwAMCB25YejVITH18LW3I3cckBjSVhANjSaF0FMbJvAEbq-aSGfSd5ERaOR-QPGWIEAbgCzq0aAZjXeiBN8-IthTxUt7V3jIJpyYMBS2bLVm5NsidDggV2pfVaPEqG-n7GaaiChEA0obwPfy0mY6aga6QPH-_Lfgg08f7tJmMwp3za29cY-2jnb2JzjcYRWkXyzimSRCyO4lVBvpwL2YsGteoTdy2WhXwaThEefAX1kNwFiCKScMQgKNKkUs1s6reTwvXHS1_aEfk681w3JEg08C3yDIs0IToPj-Efq0w=w1224-h918-no)

The flywheel was placed in the gap first and tilted toward the tailstock. The faceplate was then screwed on and up tight before lifting the flywheel onto the plug. Tailstock support pushes the flywheel's central boss up against the faceplate with the rim overhanging the flywheel. Some lightly placed but secure clamps provided the drive.
(https://lh3.googleusercontent.com/JmqATi4V0vK85gNdlZyVj49vvfACjGiSB685NYhEMkRcPcHQsP1_ygVb8R34OLdRDNTGsNDCco9_6Iup6fDmAS0ehOiiUenucaYDUTo5IluvFaCYpZbaSHACYsVvL258c7FiB7Ueef8k-TqqBzSoW-iJ72wCCgmfcVYhpQXFOxJQVd2DqFbKAn7vaNxgtUnjzgnA4VG_-c0ZIEgJNg_8Oax4wPx2ffJeYq-8PzZ4xCI2_KC0uOCU4sN4Iuxe-pqz3RfMVZ8hTvcz2dhON6cmTYQw8U2_8tT-V00JgkSr2ZGuoVn7aBqIe19JK1tW3Wn9JpPAvUyn94FwQ2dbfVExKeZUuFjjU16nYvw3fv44Rf2SR7FA-PobbbcCPva6mys3yOyr81McyESoj1-mzfx-7LK-k7k7KEQKga8w3MimjA1necb0YElEba8WKVHDM41nVXF99p11oXgegvgIWePMMBSAT5pSudxkYOacWWCPqZ2BlQ5byTNu2al3_eTE0HkUPmWfnHMUfh-LeyKBBPzPmNmNHj-NGrv3w9rPdegRuza4SWC9LGbd3le6ceg0vSFrEi2CmL7PJi-b8zdMDq5qKBQeEdU0fhho3DwcWk1H__s=w1224-h918-no)

I think you'd agree this was a successful, if a bit hairy, set up but little if any run out  :D
(https://lh3.googleusercontent.com/WRBPK6kqUCb41aMfttWo96VkFzgJlPZ0SRO9IZANkByJKNkdb90II3Z7avzaXvnMqbujw1MLRKEMqv5ZTFNC1LuKcYpmVBqrRaLCseBSYU9IQsPLPXemNqgZqKE2uWvTSqTcQTt9bGUasQ-gRs58ZL2iqGMjalyGlBng4dzhb4dFX-xbv4W5Wd0JWuBSQVh4Z9erFoFnWvwrYr-IF2lZOYvTNw3o-rj9Kbrk70ehhwpw7ahaO0leTcl_AoHFFIaOwMU752u5Y0vrM-wMkkb2_awIJwv-I_N6yCvMBpbt521xFDiwONu2y1DDzE2Sh3ojsTRpu3-Okr0GuT9JNN6wx5oNzi1M8-2S8YqnP4kri8imNdKQKQfZKhqO4QTQKN_0vk1WBm2FS2cmZpml8oxjjhOd8m2Q85V8xvA5NtWEL7ai_6tK_iQ34uqz53Cb31vJ423EimQ-GtJrd8cI4xqqVsUCbcKkLvK-RN4ZuUG1UJtPTjyabhEC5rovHjGyVnVMGViG1nZWr-uDM4uLRU3UnAaYTbzavuBCPW0jGctm-iiZxNDUJbwo0tnpZ7-iFtnvGrQRYpQ-9_psdAmjc2JO1yz6g3QcZxWVLyyvND-ml8A=w1224-h918-no)

The only thing that transpired doing this was that the spokes are slightly offset to the rim do to losing that stepped join. In hindsight I could have ignored that and made the wheel a tad wider but hindsight, as they say, is twenty twenty vision and that's not readily available these days :old: The plan is to board the flywheel however so it shouldn't be too much of an issue.
(https://lh3.googleusercontent.com/xY-4u2tgVDGFGmXZa90Fxo4LSqUBnUASdxgMUDrDAX4cA8mGtagaCE31SWAGOReICDzU3RO-wjTVpKHCx3cIomsvsYbJZxXcbZRhQy32LSpcViPYLFlX1p5IbJ9zMsmKaEWk4FeN_6AZsHBpKy7mymukluu2hiDbZ5zDG1vLDMjwNvTluapa7IpNNOu9Jrkkuq5ufrzTAZzPU_jRg78bpQSDtuJH6liaQiI4-SE8_S0wDBFj0ARoM15PZI90ZToR9uJGckMTDQNqm-NbfXT8HP2bhjDt4EYSPjWcrg5FYnHv9zXh2NNEa6oI3qIjqN-n2U_0zSm9VG0S9KuhJELqw03xZkLL2AQ0WCW23ixeLdTYfKfdP4rbAwdtLwYoA7CdioPplt0fqk092_XKrizhCU4C--tksN_DhZnqr0obWD-CgPs6Lz3vpCBANJIUPTZQbXLoZPMIQXWwsEa4nyy34fgP-xkM0KwugO99TnBp8uEkIHQdjkYJD0tQT-wYeQIWnyBqUcws4r1ZekKc7XWOXYHQT7tLsyHfKr2twj2PYbasDDXjn0nGpEb1Zmw3jCNVHyNUS0WBD-H25G0SW71M0VpblmCxAlI3botjDI-Fl5c=w1224-h918-no)

So, a successful outcome and there's still two nice un-machined flywheel halves in store. The icing on the cake however was at the Forncett Event in October. Both flywheel parts laid on the table and explaining it to a visitor was asked what was going to happen to the remaining half - let's just say a favourable deal was done  ;D

With this ready work could commence on the crankshaft and getting the bed plates aligned on the base but that's for later

That's it for now then - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on December 17, 2017, 06:10:08 PM
Great update as usual Tug. As far as the hairy setups go: I would assume, given your former profession, you are accustomed to “hairy”, as long as it’s done safely  8). I just happen to have access to a liberal amount of “pig oil” and an upcoming heat treat project. So, I’ll report back  :cheers:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on December 17, 2017, 06:17:39 PM
Whale oil is banned in the US by the Endangered Species Act of 1973. 
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jo on December 17, 2017, 06:42:48 PM
At one stage offered for less than half the cost of the castings it was met with a rather ill considered six word reply of "I won't be buying that then" Needless to say after sorting out the packaging and a potential courier that was really 'well received' and precipitated an immediate 'well there it can stay' attitude (well, sort of). And so it's sat, redundant until now.

A point of clarification: If you are referring to offering to sell it to me then the price you quoted was more than half the cost of the full set of engine castings at that time not the half the cost of the flywheels. When I enquired to Southworth it was cheaper to buy new flywheel castings than your orphan ::)

Jo
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 17, 2017, 07:04:34 PM
Well no names no pack drill Jo but I distinctly remember the amount as £90 plus carriage. At the time I recall those flywheel halves were around £45 plus a piece but it wasn't the amount - that could have been negotiated - just the manner of the email from the person concerned that got - to coin a phrase - right up my nostrils   :(.

Hi Eric - yes you could say that - one or two moments to say the least  :D Thanks for looking in  :ThumbsUp:

Whale oil is banned in the US by the Endangered Species Act of 1973. 
 
Quite right too kvom -  I would imagine it's much the same here now however that was more than twenty five years ago we began using that and I certainly wouldn't suggest it now. Just wanted to show we were trying to do it 'all by the book' at the time.

Not much done today - far too much time on here but tomorrow's another day as they say

Back later - Ole Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jo on December 17, 2017, 07:08:27 PM
Well no names no pack drill Jo but I distinctly remember the amount as £90 plus carriage.

We have a difference of memory then: Eric and I remember it as £200  :paranoia:

Jo
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on December 17, 2017, 07:59:41 PM
They have gone up a bit in price since that 2004 invoice, quite frightening actually  :o

£1650 a set, £150 for a pump both plus carrage, now what would it cost for a few blocks of CI to fabricate one from :thinking: Luckily I have a set of rolled up drawings so that's another £48 saved
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 17, 2017, 08:02:43 PM
I know where there is a fully machined Southworth 11" mill engine flywheel that might be up for grabs if anyone happens to need one.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 20, 2017, 05:41:00 PM
Had a couple of good days machining on the eccentrics and relevant parts but more on that later.

From the outset I had planned to paint and erect the engine has I go but so far I haven't managed that - painting that is.

Before any assembly could begin however the base required reworking due to the change to all Corliss and the differing associated pipe run.

Two 25mm box section bars were bolted to the mill to support the base and the areas around the holes milled to accept aluminium chequered plate from Southworth engines. The hole for the steam inlet into the LP side valve layout will have to be a 'dummy access' cover as will the hole cut for the originally planned floor mounted stop valve.

(https://lh3.googleusercontent.com/R4jvI97KDsCqrKEtLhIujyqPQXKjQCaW0AajWem2psJrWJE2GIOyXNUsqNV93our6B6nUYzuwQ5KbbtyD9uw9N5OiGtyzWXu3PKJLmcAEdhLsODuR7KC_g64Zq6BK55PcFfSciodcy41QnO3rH_SmA2PJv0UxDZoDflPzH5MdzeYObte_yODe1qVJZr8b3xjMn8-0OrcCbXE6OJ-qeamtlEBIRGT_UeD1WCMNEzqL8ujzoIlkURF23AJ4-CJUr4c00Ax465taVV4KDWX0pCA75Op9t2hGzHVw5uXqzEZSgdej-qYjc3efPJMirF0_4Y_QNPBtvN_rTp8z4mAcmeGMIDVouwgPmYIAJWWPBjvREsKApnD6dmACGkh4mcepMzgZZWLHDjOeGi3494dLfvx_SymErNQolnsiw3CMIkSO-cST5r37gVgSqSFyw-TEb85cy89FjQepf2ZpM7iucyRQX4gZHU-6Lsic9UHi-qycSYUnqy4HwwA9pDk4dLfHByvV39DADaiOkNypkREqQaiNWmBAtsUVCJXW6x-Ne_4K55brkoE4rQ5FN1JFNBTy_LT5ogfDTgG70eXl4HzqwcNDcHwyCev0WpA_223_33Y=w1224-h918-no)

The Fywheel pit was lined with 3mm thick MDF sheet scribed to represent block work The top had a rebate milled all round to accommodate edging bricks which again will be made from MDF as done on the Waller engine.

Incidentally the 'snap-lok' coolant hose was set up as an extractor in conjunction with a vacuum cleaner, mainly to cope with the cast iron dust but worked just as well here too.
(https://lh3.googleusercontent.com/zRniXypqtxdeErR6Rhn9EUptfBrzK_z8KjoOMiqaxW69CcX1eP2B7WdRxw_1HR_zN-5ECUwZebDWZMX4x55n1uvpPWsAgJhUq-qVh7EoHkb-Ss4-Ji7eIevdNK49AFhCajJT5CBWZWVMrnBEuenY9Cy34aPAFeE41d2kIv3YTOea1A0eoQx19wRXSdVk4ylIM58ZLl9Qp36ZodVgkTBNgTsCNWfQGCoWUKTK1U4hrbiZN7n41eHovSGlG2LdS7zvGVZYLHTUfbWGTpToFMWPmfhpe6DexCHpTToYKPf2HnyDNoTPZ4Jon4mqKdcnymcnkYPnAvtSpDcV2sNMziM-_L0sGwBAmZdvZWglnK0IoKtZ6-ztNpzYlIP_tIN6muTK22HssT4KwptBmgxJefkF4RWxHhhSLsJ-_vhWtmCju4CJ7cwpbMkBN-h1Qk5mgP44rvWc3yH0RQwX6l0pUCOWKgyTz_2GsgdBXf0aMOn0gz_boFwnNJmotVNjq6UG12FBek5XKL6JiHwp4NqlHkREE9YoG5ZiODVjnLat44c0485CtpPe2teGMrlnpMXkVdINJjL-oBmxv41h897kM4mb0EwxXRGknaWukOZ62W89=w1224-h918-no)

The sub bases or plinths were also cut from MDF and treated with Sanding Sealer before screwing down to the main base. The engine could then be set out and the holes for the 3 BA foundation bolts drilled. Each bolt was fitted as each hole was drilled to ensure alignment. One of the situations I wanted to avoid on this build was the 'break down and rebuild' syndrome where parts find a difficulty to re-align themselves! There are a lot of mating surfaces on this set up so care would be taken at every stage to ensure good alignment and free movement of parts as each were fitted.
(https://lh3.googleusercontent.com/Bts-1cRiM8FossyaH0n37H3SgtS5AMfTH82PVn-5qgZ_CbpYL8g1TknzmwZhlGiTZ0xo4jBTxctUePj8uOVuF3IiwVxvbXrdUErhRu4u7Z_wXHRYcrGG_vriEKVpk0FQNMVbBpcbb_XGB3AGP1OIlVRPGcmEVfIGRu5x3X1riOhs0AsLYRjZ77Bx-hP_nAgXJcRwWW5vNXe6BCucmmblhAIp3_3ixypgXJdZqeOrmRvnI_LVo3GwvV6Y_ojLHzBM7scad77YjQHtgMJ7F8Pj6m7Rxt0GH3XwRYs6-bIk0N3xJz_Qw2sTEIRpqTyzWJ5C0cTQZEV7a5tKOtjMoogOff9qgTA9QXxul4ByqlzFntY3y6oeWNfTcDL1O0Lvlz8rfAej4uBipZa2cABVIVGVXWwEk9GfC9qkQ-_EO2g7llAjfd0j7xYSAenVT9bDOuB7HHlm_DomrvlJL2Sz8m159G6K5uUqF6Oq_CUrZalreus0JVnS_mE1eCruY7nlqs5NeHR_EC9WTJHuYOS8uDsgn3M0cVcTjc2TpGb8zm_iax1vDFL20NIveAHXYHKttkfgG8OtohmON2x-rbvyGVKIRKaMq0opd544JV8u6zhI=w1224-h918-no)

A closer view, the rod is for aligning the squareness and longitudinal position of the pedestal. I particularly wanted to get this right because the Waller engine had a very slight vertical mis-alignment which created a wringing movement of the crank which in turn induced one of those 'mystery knocks'. Vertical alignment here was done by careful measuring and taking a whisper off one of the bearing blocks to bring them in line.
(https://lh3.googleusercontent.com/mBSmwie5yusfLMBhNksqsa0PO22JJjrduOTH7FEmtossS-GnQP-5JEtpWsdO234SkUBL8RQNjov_73n9d9vAAMhuU1zn1Bnl6ATf-SPVgF1_eyO__48rFDlWNSdwMxteOBuolBHFybw6S6K1eLY3R3u_HS756AQ7xQNc09MAJ93hApsnKDMa8gIBmW2lQexliu866jN_XuoQXemSxRr-rgi0bYydn7U3hxXSObHstPT6pOghFSMllKB6InEue1jf5mkEYsTH-kqOI42TgOY6EPvBDPELdz08KTjVmo6vLmBP07IHtpoQ52Oa__TYKhJSXi_giRUYS7gy3TMwRNkFAT2SX5tictZk8YhEM0GGdItu7-VodNvUKd_UHk_gQpknNhYzWC0IODYG03wGqGUU_k6PMrWNLpy7dyHIhNfvc5S59qZo-sMR_AQigXBCfSDw_HYG4HjqUA7wmqcF5o47pXcZf-49XWWxSAE7ePOvA6ZA4Z4tUJDrevhhGIKAXC7g203av7gF06mG5Yqwo1KhPhocYQ_RFtJ1I1XJ0TqmKUvRQlLusO4InAF5FdX1AJNfFrpHfRlhRcj9WuRAdgvu8mQwQxZfLFfd5ewnd_Pi=w1224-h918-no)

The two bed plates were joined and the whole set on the mill to establish the centreline and drill and tap for the cylinder mounting bolts.
(https://lh3.googleusercontent.com/9H6WGnqrZyEoWkxeCMn11gfqMsmDUk-vSvkBNh5fi02aWB8KWrdFenMNMP1LYRu25U5gsjTJCReRrcKm2ElH8Hu4wOS_vN2xsHbEpMrEJuAMRq-aQnKAQYyz_wGJE-ASc4TUM5i1KRqXRdaoNBe1lXSVCuyH2CDNvZOfz7W3MhZtpbdqeaXnyb3BC7tkHl6xlPRTnnK4aJO0XZLHqpFoggxQG1NzlTysAg8_kkQPLYvPiX21MUETFlv5OCkEEvhiVuBhiZsMiMP9sO9BKBMfSDvfldAEe9TOjT2pywnq8OZo4j6zv2tbB2ykxY9vsecVwu7GosTkW53jJ7vIjl8PTvyTZddOfgqSkK-eaaxe7wgKQoGDRtghtMlTww73H-8WPL5BAtry1qQnINHFsVniQUL_T-OqhjUeMsVq_6c0wF_tgXnmL-nQlBpN6whiVuexn6lyc40IOAxRu4pYpRoixdv40l0aAEZ65d8SaGrfKIwo8JZctdAtjm8auvmM_iKPhmfuSR-cxzydT9hQeRKYOJGuLQa1KIxrbRvuZAFFsLi0fVuOfqpLE3QKYaWh-g6bdJ2dnq3nOdHbGyNrQGV4bkb49RiaOsecPHZZFugt=w1224-h918-no)

With this done the cylinders could be bolted in place and the cylinder covers finished off with their respective glands - 'pseudo metallic packing' as it says on the drawing. The glands and covers were drilled and reamed and turned to fit their bores in one hanging to ensure concentricity. Pistons were turned from gunmetal bar 0.05 down on diameter and a groove turned in to accept the much favoured PTFE filled packing.
The piston rod is a composite - three reducing diameters each locating on a long spigot in a reamed hole in the larger rod. Each spigot has a 6BA screw set in the end to pull each rod up home.
(https://lh3.googleusercontent.com/LA2n4IlZbbVakiSpASuwaBJU7vAKAUB2eCW6OMFBBXFOtw2L5p1gSE9trqKRSzJRO8rpswwBxZoNlOexYd_Uwtx205VxKO2O6LHh6EA6Xdp35lhkfTOpE_gxpyqxeVhvMj1Nyp9vRVIcZf2nwd3vl0lt-Tv_j0JVAfRLBMbzJXg-LiPOd5bQJQv192wqDd4rSOxBlB8oEgu37HMv_jLcQshHLoERVW0CMchFEyipu77AcSczupag6iTcPcLGuAcXGRMYThk1PWZ6ioGlUZsrg0YQqMG4Pw1R4mXQbVn3dtNsjl9joNmrS2Cc5zTVJTM4dl4HyJA3M8umBCbabV6cvLNc7uHp3QXIPo2jaAFa2SGwTLPt6_YS_izyQLEp8Nzyu0xr3HSDE7cTx-WcBEGuKqmBf0Gi54G4MWvPcHYyFgT20isNFwDJj9XwGvzQ0_vPhU9f0s84Tv1bFgkXZpt6upXuf5M38ggePztXqSzYtRCY917iTBuutIo-zA6BaxUCg29Hi1Z7n5lhi908AMS7s9vezw_wH6m4sugFvvzb4-Pp8N7pJp2Lzs8txco5ziVujaPHJlYXqZAANxcADWcV8JSf9BrKF-KDgFtChKja=w1224-h918-no)

It would be nice to say it all fitted perfectly but once bolted down the very slight error on the height of the LP cylinder was obvious. Shims were inserted under the HP cylinder to establish what the difference was (0.1mm) and the LP cylinder was removed, set on a mandrel through the bore as before and the amount skimmed off.
Bolted back in place on the piston rod and pistons moved with ease through both cylinders without any tight spots so I was well pleased  :)
(https://lh3.googleusercontent.com/dcxjfTT3mQgAyF2IcqpIii4FxGbhSlPowEdcj22S6SmjKTMul9EfBXH1K1g1aLh9qKJX3Je5merM2erPYJJHSPe_wDOEvwgZfHKCaIfd6NwLr9YyKWAYPHlts7QKId9_OywMdhqpys6v729syXw_MLXPmB_A8E2lo9FGgS3j4tqxZYxQ0YPoLD6CmgQ-D24sadtgx2Xa_V9o-lT_-AHLAOsvLhlSHBbNe9ZTmMtMhw3w-ly92rmcBJl1b6mUZIS8dg8SMblksuOmCJmSsx6cLDAQKnhzLd7IF2VATvIgEIXZeBGCImS6VUqZMnkWaTjXX3sgSEnPnAkXgnLwtH3PF0LB-FjMIb-yodLg95y_awC0_DTYaHfFG8WGz2P2LVHiUC_Vcep0uDLIrT6TpJwsmc-5cNSZb4knSSaL6mWz8AIVtSVahRGNambqvMxJzlgGR4G85xucCozxVayG2sMlp_L7yRGisZRIqGteFDTO5qiYET_0_3vuhQJmb3k1otfZZGeMbtrwq4Oqs8gWlNDyMlp0RREvA7D9LcLaMkcYjQPb05T59SBaJnrNP-OGkMJdql7Rrotf3noArKYFMq7midtj0Gg1BWW-fvJu_KhH=w1224-h918-no)

Now that flywheel could be fitted but first a crank shaft is required.

As usual hope that's of interest - any questions, thoughts or comments, good or bad do say

I'm off out for my second plastic clubs Xmas bash tonight - change of hat for the evening but I'll be back at the lathe in the morning
;)

'Rest easy' guys - Ole Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 20, 2017, 06:07:40 PM
Really coming along well Tug, I still can't get over how large this model is!!  :o Will be quite one to watch running though in time.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 20, 2017, 07:40:40 PM
Beautiful work Tug!

I'm really enjoying seeing this engine come together.


Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 22, 2017, 09:10:35 PM
Thanks Bill and Dave, glad it's proving interesting for you. It is a bit bigger than I'm used to Bill but at this stage it appears it will be manageable enough with two of us. How we get on getting it upstairs at Forncett though remains to be seen  ::)

I mentioned earlier that Terry Fleet had thought it might be the first tandem but that I wasn't so sure that would be right. There have of course been full blown Twin tandem compounds built and we did indeed have one of those exhibited at Forncett quite some time back. Exhibited by a first time exhibitor from Framlingham in Suffolk it was fully finished but had yet to be painted. It was a very impressive beast but we have not seen it since no doubt due to those stairs ::) Also, of course, there was the same twin tandem version built by Cyril Rylett many years ago that was left to Mike Crisp - it was seeing this model at an Ally Pally ME show  that first inspired my interest. Perhaps Terry was meaning a single tandem compound - someone must have tackled one but I have to say I have not been aware of one so far.


The crankshaft was turned for a piece of 30mm EN1a. Roughed using the three jaw first it was finish turned between centres. Turned to print it was only on offering it up that the offset spokes became asymmetrical so the centre section was reduced on one side to even things up and put the flywheel equally spaced in the pit. The ends will be reduced to remove the centres once all is found acceptable.
(https://lh3.googleusercontent.com/Utl0nIFfIC30uChXJoQHVnO63ehZBNxfQaoVNJA9g9RlIsWh77VY0EJv2_swV6t3WJOlVgG9HRTd0ngKGdG_x3hRg96gQlejUEa3AUXY_kD5tLYaaKc5_MdrXzRUm1klBoqGAnbYfRSc0o9kuSmklK94sCb_Xa664fyOE_glxMW8DJPb3M7BrhB3hr-CQLlaZrKIU1pK1KcgnPvr-G2vz8lsC7-qlTfG0bnK6HTupZnMiWva0AUpByTpDEplgQoGHoFOFpCyVaB_XMjadoNtRcxD02wIr2_-Vy4NzSVbpQCVdhhputLrsoARuQyKIKIw1H_0MpHUeOiIdY45fw3DBA3clzxHumzrQXDSw-S8XlC1zxgih1f9rUUiOytUIp4PIjE0YkieEJO27d2m6A_n4bn_VDfbpg5__gfVzAoW3hvjDJfTfo2xo9_W-5NedvLGrCQgQN3wXwYLe8gjPzHvQJt-IqhIUhvQ7YDzND0JGzx79kSc3myEGPsR6GHxP2-v_LhkXCYiL-kWpF6y01_AVdFoObet9FepdTiU6BQALG9TgeUcaifWT8f4VNw3eGrCodruQ71JDzJr_dN-OD9iMCMGuam8cUFWZ7lGfy-Y=w1224-h918-no)

The bearings were machined from bronze - not quite sure of the exact grade. Done in the usual way of soft soldering two pre-machined pieces together before facing then boring to a good fit on the shaft. The outers were them machined to the bore and to fit their respective housings.
(https://lh3.googleusercontent.com/GwZzl8F0a3haZ1CynHa3w2fUT_Ma0KZsFwfRcSZYDfDR2YHMXrhFt2sUwtKSIuaax_T1XS6E87GRMkMLeNmdleje8t8RNRYaEI2SR4iKdazTg_eJdQ42IQUcZ1l-gX08qDulSE3sFtdq8Z_dTlwoc6fFByQw5BstnafR9gqqbRCPiiF0Tq_oLZhw5iOmKtdzpMDPi-SSKVa5QslbFzh42bcA1L5SkF4hkvv0euxLX1d6Ic-w9kEML4FXa5hVWIjBlEur15LyFSUcywiPFBfOrr_z40JrJOxkgc-ULEhkIvGU7-NEqYymimP9u019WsdxGTdBoaQBYJnAh4Rlja3Bk6LNO1Qq_2qI29WowJz3hakXKbfxvxmJLgVziCXgnpr7CueHrwK-SZ0W8_JoOLc8qy30Y6wUji1lvj1FQlNznKPDvPGaIbCkbtMrkjKsjDHCf1TxD-c3jTr9zytQExKldPsdSADQPJgRmQ-wsDFT2w4q31lVV-Bwwe4GOj_sULBGf3hKOg7jS6h8wFNi6mu3VOu9NRmnK06DK25QH32LlXH2TY_TZF812e0JS5cnxdD1edeKNCpD6qWSLL5ZRRznvtlZEBN8FwX9uYsvraFd=w1224-h918-no)

As said earlier there was a small amount left on the lower faces so that one could be trimmed to get the crankshaft truly level across both housings.
(https://lh3.googleusercontent.com/f19ViQwa-krpylD5GIQaVNZ0Anzn-tXxS5pB1EL99SbU7dMadxyda967hzYZBm0dI0_Ch6QEhpQHgE2xbtLAE8uVqV6orO1cgDbFcu7_CLchNuJ_vfwXnH9ry357XVVjeqX8mSArbmR4tx7KnPzzkg4uA8XF41-CY-ngkrE9VhTlrXjPgZtQjJhDAAMf6IQU9Fhkw1sjH5NN9H17ZhSQJWGXiqNDmW0kZdE7Gp5gO7XfLCP8qUpAA0ubq4XXS6f82-9_XPF_iU0nm4cC-vRcCu-q8LmZHc34Gmr3uox6dIIhmuHa0NxpGWUbwNmer1xl5S51FnrHHDqi6Oefawqry77JTHvGSfcWvdN85Kwc8LH-Al2wFA3RmEjHhBAdDx4EVu_9dMdaUmrmB4rixA6x0dvu64nRaWKknRBOjVRsVxDEYMPu-1tdpRugJkdqMlKa5jR68Zrjq0FBJNMcN9QIcfowH5eZAtTaFsmLrtGLCkjWWFiso_YIFPylIT15qdbQPHAfk-SCtLOc3kQhsX1DQ4cYRqYwRHKrBUmcqxwvTQOmoIMGiGsrbVX-YC-B_YF26TLvjqXjlCpX0Ej5u_kIbsNWHwHUOOjyw5p6lOEH=w1224-h918-no)

The bearings were then reheated to split them, the soldered faces cleaned up and then place in their housings. Both parts of each bearing and pedestals were stamped to ensure it all goes back together in the same order. And then at last the flywheel could be fitted. The bearing caps were fabricated from slabs of cast with cast bosses JB W'd in place. Bolted up firmly one bearing required just a slight filing to enable the shaft to rotate freely. BTW those steam chest covers were milled from pieces of cast iron cut off a bar with the bosses JB W'd in situ (what else eh Simon ;)
(https://lh3.googleusercontent.com/Wrbq33D7xTxKhNsb34NcGGTBcZehxzhse_eey_j_s3d0MrNS01K6P40OhRJQ0ZUfA5K3jw_Y581sAuUChk7nN0zaJ5tEBpRpT-ecsCte3eKRdfvF0Xk9i0URWWPCcizW-h1nDb7fWwI25KsHDZDxxqhWiZHIPrXnPRByMxtmg2tzAXovLzc2UawribVn9VBBxUYh5QcxZ3YNC-MU2HmPyfbqqIsXQDsydhO8LEtVrU1VO-LlTIfDgqBXVAyBbWkecYHE0U2WB4gsafgcU6aK4YMoa2E3lSaiTiPGGh4P_wGg7B5twcVlFSRMHZYfwSvN8mkjBnlnPv7omIymijVtCeN4FynmknNSAY-dDYOi6QwASnBI3Ju1rDhUKermLeXo2BHM0xgXSyFW2ZTw21TmFXdXT_sFtXprbGeZ7TYzBLMWYLAUmReH8Knr9gr6UELQCDHqoji-Lg_aNxNMngiZahZ1qOOgBzHI_LjtbVpuZyASkqQ77A1CeScXdMWHHug4_ptrwXnnUW5gYkncZp-sQo0e15uyzkimACpuB45HI_30XS5MUlYvNrFjO7P4A6YPm3X9VLDt8gNI91WklgLB1NpB-CQu9Eb0S0d0bSCC=w1224-h918-no)

Though the blanks had been prepared earlier the eccentrics and straps were next up so more on those next time. We are getting close now to current state of play - today saw thos eccentric parts fitted and turning

It's been very quiet on here so far but just in case you are looking in

A MERRY XMAS
to all of you who do, may you have a real nice time over the festivities and all the very best for the New Year

Cheerio from tha ole shid for tonight

Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on December 22, 2017, 09:36:29 PM
Tug,

On it's own that flywheel is imposing but once in the pit it just looks 'right'!

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on December 23, 2017, 12:16:52 AM
Wow! Very impressive there, Tug.  That flywheel sure gives some size to this unit.

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 23, 2017, 09:39:58 AM
'Morning Simon, Pete

Yep it certainly steps up a tad once that goes in place  ;) but I think your flywheel's even larger isn't it Simon?

It occurred to me as I signed off last night that some might be misreading tales from the ole 'shid' as something different from that intended :o
Thas plain ol Suffuk speak bor - shid is were I spend my time not what I'm standing in  :ROFL:

'Hev enny o yu henny idere where ol Tug is?' 'Well, blast bor, hent you troyed his ole shid - he's a orllus in there' 

(Have any of you any idea where old Tug is - Well blast boy, haven't you tried his old shed - he's always in there)

I hope that that has put that clearly into perspective - now you know what shid is  :)

As one well known personage on here would decree 

Y'all have a good one now  :cheers: 

Ole Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on December 23, 2017, 11:10:49 AM
more impressive work tug! thats coming along rather quickly.

hope you get plenty more time in the shid oer xmas  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 23, 2017, 11:24:07 AM
Nice work Tug.

I am waiting with baited breath to see your methods of eccentric machining (or perhaps I should say machining eccentrics)  ;)

I have just finished the drawings for the ones on "Agnes", and thought I might get on making them if I get a few hours spare over Christmas.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 23, 2017, 11:41:13 AM
Ah tha's my bor Bertie,  Dew yew hev a good crismis now  ;)

Phil - I would have thought by now you'd have realised every thing that comes from this direction is a tad eccentric  :Lol:

I would imagine you will be splitting yours but I did take the easy way out. I'll pop some posts up later but right now I want to get out and get after it. Delayed start - someone insisted I needed a haircut for Xmas  :D

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on December 23, 2017, 12:04:17 PM
someone insisted I needed a haircut for Xmas  :D

had my xmas trim yesterday, the poor lass almost needed  a hedge cutter! 

look forward to see what you produce today :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 23, 2017, 03:08:52 PM
That is a very big engine  :o and a nice flywheel that reminds me of the cable drum / flywheel in Glasgow Transport Museum - used to pull the subway trains there back in 1896 and onwards for many years.

Even though "you gone big" I see a few CI engines behind the flywheel and if they are "your usual 5cc" jobs that really put it into scale so to speak. Looking very good so far  :ThumbsUp:

And a nice Xmas to you too + the rest here  :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bobp on December 23, 2017, 05:52:39 PM
I would like to congratulate Tug for his superb work. Having seen some of his other models at Forncett I am not surprised.

Various comments about the engine have been made in the posts so I thought some background information may be of interest. Southworth Engines is very much a retirement hobby business for me. Its sole purpose is to keep the range of pumps designed by Peter Southworth along with the Corliss Engine designed by Arnold Throp available for enthusiasts like us. Peter and I had many conversations about what would happen to them and I assured him I would keep them available while I could. We were both aware that if they were taken on by someone in the trade they would cherry pick the popular pumps and the rest along with the Corliss engine would fall by the wayside.

You would think that living in Sheffield with its industrial heritage getting castings done would be easy. This is not the case, foundries are getting fewer and farther apart, particularly those that will tackle our sort of work. I agree with Tug’s comments about the quality of the air pump casting. From what I can see from the photo I would not have sent that one out.
 
Peter swapped the cylinders over from iron to gunmetal at a time when he felt he could not get iron castings of satisfactory quality. I understand Jason’s comments about the cost of the castings. He was quoting the most expensive option. After criticism that there were no Corliss Engine prices on the website I took the decision to put prices on that cover the instability of pricing from the foundries at that time.  No customers have actually paid that price as I have always managed to keep the price considerably lower. I now have a stable source of supply and will be altering the prices accordingly. I am planning to offer cylinder castings in iron again as an option which will show much lower prices.

Tug made the comment that the casting sets are very heavy and as I do not have a contract with a carrier I now supply for collection or delivery by me only.

As I said earlier, my motivation is to keep the designs available for fellow model engineers. I have no objections to anyone fabricating and or all of the engines. Jason commented that he has a set of drawings and these are available at £48. These are the original Throp drawings with some additions by Peter. There are 18 drawings to a set which I print out on an ancient Canon A2 inkjet printer, one sheet at a time. I hate the job and it takes ages. Perhaps that is why I have not finished my Corliss engine. If anyone would like a set contact me as I am happy to email a set free of charge.
 
I look forwards to more instalments from Tug. It certainly motivates me to get on with my Corliss although it will fall short of his standard.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jo on December 23, 2017, 06:32:21 PM
Hi Bob   :)

First may I say what a lovely guy Peter was, the two of us spent a very nice couple of hours at the A34 service station (he was visiting his mother in law at Salisbury that day) as he handed over my Cross Compound Castings and showed me his Triple Expansion Engine that he was just finishing off  8) My castings are all Iron other than the air pump - it was Peter who talked me out of the larger Corliss engines and having built my four cylinder tandem engine I totally agree with everything that Peter said to me  :ThumbsUp:


I must be honest and admit that I acquired an orphan set of the 6" Southworth steam pump castings last Wednesday, without the drawings :ShakeHead:  but I have a set of the 12" engine which I have been considering scaling down :noidea: I would appreciate a set of the right drawings  ;)


Sadly like you I have seen the cost of having castings done go through the roof the last couple of years so I fear we will all be forced to make out of bar stock shortly: it is not the same  :'(

Jo

P.S. My Air Pump casting from Peter is excellent  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 23, 2017, 06:36:18 PM
Lovely work Tug, just a most impressive engine!!!

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 23, 2017, 10:42:51 PM
Hi guys, Thanks as usual for looking in  :ThumbsUp:

I don't have to go far Bertie - haircut in the kitchen then straight out to the workshop ;)

Per, nice to see you here  :) the diesels are original ED 3.46 Hunters, one needing a new spray bar the other just a clean before it's first run for over forty years :o There are two 5 cc versions in the pipeline, cases are done so maybe get on to the rest in the New Year.

Thanks for your kind remarks Bob and for putting the current situation into perspective - I have a feeling you may be hearing from 'Delta Tango' at some stage  ;)

I have the eccentrics fitted and working at last Phil - not sure if the following will help as I'm sure you  will be following full size practice given what you've done so far.

After a lot of thought I decided not to do the eccentrics as drawn for just one reason - that of being able to get a reasonable size nut within the cut out. I considered a two stepped bolt coming in from the back so that the major part would provide the grip and the thinner part the means to fit a smaller nut but trying a suitable sized nut it looked ridiculously out of scale. Besides I really did not want to have to have two gaps in the raised portion that the strap actually rides on. With the fact that I want to display this more as a working model than as one as scale as possible, the opt out to use the conventional, one grub screw fixing, hidden under the strap was easily decided upon.

The strap blanks had been done a while back - two slabs of cast, face and milled square then drilled to take two long fitted studs to keep them in alignment.
(https://lh3.googleusercontent.com/quc04Y7zxGHUloVz4Vh1BzmMQEuVujMZ6CBlheutYjAI_DLRo51iWvYKT4HiLg9LxY36sGASZsvd5rRsjHWnUR744Sba4DRYSHo2hCcSk6yacHPOHMVaxckIgpgyggPNXwGo5WjjeMK-zQVeAFOMaZLg1JpySxGSDhWuKs_h1UMOaUkQIJl4cqsc7SlfoIIUCxZMbw06GEVGSJSlU-irqZAfO5BCnmMAkCP1fx2LF-XR3Tm7In9akQI1pX-XBxbD7S-iQ68NK4FLzIjH_5Vp6LGZppyQw8Te_JsTAWyghAMZ_0uYs9ooZUyXM8tjCHcP7eEnrnqQwlGsEtW2HkKAUmgUgzyDxlCrPbYi3X5rgaaF7oYG5qdgtrgpfPVk56otCHbVSA5Z6XryNnbczH_WZdA1mXBn01hFhnU21TCxN_lnzSaElY_URjhCX9thQzi-pdw4tj1vLo9jPP6ES2MhLdQU3OTwWfwY9ofzWuetyRxIVihdqGO5XL7DrypjoJSWYqogoY1xhse0H7v_3soB43PSj2a5ppUvFKLKxFrPXUF5psakZH6M_XDiz2F24aPz0FE3yYWmj8ljisIa8AienelJ00Ut_pUrAFxSv3my=w1224-h918-no)

These were held on a face plate and bored before mounting on an expanding mandrel to face to thickness. I found this unused mandrel lurking underneath the lathe bench, it must have been there twenty plus years since I made it - at work, along with many others, from scrap bits of steel and hedging against the day when the opportunity would no longer be there. It's the last one :(
(https://lh3.googleusercontent.com/vQeRWN86e827z3O0mYZgB09czFjev3ZAUnQl1y0l0_-pmfDh42XChda7f0cA7RpwTh--VxQSxNy6LXJ_c9THzAU7wf1MRD4FG_TBCjftkIydqV5Q96WEtd-Tg4vGB3EkKh_G5vuyRRV4F_EkWhDgIMn1uQBcM8G49Wy2WFymO65DcQj3gohmQwBI5Xy_x0ITsA4lP1-rkk7E9dOHN2KDlI1czxUzWw3H5jfCTSK-_x1JZkICrnO1pVVa0kA4EwbUzfslurWxzVs43h78m4FSJ2ygRnnLLsQkYvWbuE-cOvEcVaAdgho3juT8ZJgGrzt1xMIXDLsHGMNxHWfN630fHyoqV_mhV8NpLmtO-XX0enH3HqD1TmgXxDAzpVmRi_T0ziJs1BrVjV-nmu5aSgNJ2C6Ah869PY2X3mPCHgD9vb3t7Jfzz37YRAon3BiJRXHAidMXiboI91Y0ZDrDW0wXysbx2bnEBngKqPaocv1fpEMXrQfZOATnpk9Z27gMfXA93EuUWe6Ey7IJ_md_CjXedi4NR4T3aMoQ5mZw1fFbvpG7KF5qeupsgCxV7sT6rX7cEjvF65MOdq8dORSh7-iBHDCWKk5ZCqYkHgXEbjeC=w1224-h918-no)

Once faced the straps were set back on a small faceplate (a 6 inch disc of MS held in the three jaw) and the groove for the 2mm x 2mm rib cut in.

The eccentrics were turned from EN1a -the ideal wearing combination with cast and the outer diameters cut so that the wearing surface was the outer diameter of the rib. The straps were tested for optimum fit as the final cuts were made
(https://lh3.googleusercontent.com/ocQsEZ64dZx2WoMuhiq95uTl0Xxe5Aba3kG2w32MSqFnTg9EbEjDL4CXchR7lP1yOo1mchaWrof_NUm7WPFO_Zghcd1D3ZFdhkDRNW9AZtqfeo9koY2qCtmO_A9SzlqEmv67He_2IXCRoPamIwETwAsB_jCUPXC9hBnLVKyerQdqxFovXly_r4SWWhK3nvELfsHcTdD832iihB3PzdDPhFjispHGb-pnf_WRttJaafT5FvAPikC2lAG4yMki6pLjZkVmnUHzOEHhRMYu-OQ_89dS8MQHXrkrynQjjaBnUdgLKfQmJcSjvXlnlZasPU7-e64t_ImSaW_0b7Ym6Kv13v8rtew4roaOpw_ReDvbk2N77VyfY5eY3s7hUJcJm5ihl15PcyxRHkrg94C-5dnEWHzICD8OPd9LWsS8KEguO9tvLrwwOeEaiQ1B5Wa3wHxZCJHT5sIis8l-nkUsknlwuN-vaTX23OLt4f-Xbp5e-1Ywh1ECo2KjXfAwuExaj0QTAx3_Z91BXI4nE14O19OH9KN05U4x26A3Mzz_wtF8T9upYh0p603sk4heRr5W8amCOBPSO6ymKOWpnNZeISzsXWrMPpnblkCKL2Zum2zY=w1224-h918-no)

The eccentrics were then held in an ali clamping plate for putting the bore in. By using a clamping plate for this op the correct throw is easily established by setting the clamp bore to run true then introducing a spacer (drill shank) between the clamp and stop to give the throw. (The drill has been removed but the gap can be seen 'tween stop and clamp)
(https://lh3.googleusercontent.com/9rMwCuzmBhW1ZT-JrBi2Be1cGYXGr-hdGMNeTczYx1Kp7PlLy2xIrGQURojswUstFdpIpPTPGIAYE3yfXBWVZAKqfBXJOE5F1dJBzhoNpxuZCq19EUJo33_Pho3ORImRbHnNrovofELn_lbqv8IQiiguiJJL-Xhttw35kPfPjZazV3yHSlo6N6ilrRM0K48-7IA5ZA_y_DL_hq0f8_5a6irX9T0apIeQraXiujTJH0hV3G04DUbKXSvMRQNuXOWrK3zVSRX4aF7XWJPuQH5oIMxj3jTEqsNlVOschGAvwDZS1cDUPLj9ca7aQIibteoQZFB-BMY8mdgkYYwc6wAVQMs-1DyfpacXvo5HE8-Z4RBvqrC91L9o4v_nflc7yVqJ7WWD7CYPEXaheHtsl5434GXDGi-oCj80a-O_oyk8hAlaQyuGw_NKxFin1wRsYvUvLEUbswIZK5tayNtc_6U-pzVZOJi0OaOL3SSWmHIWQL8_rZV4HcBn0C4duMkCRUuO6wpexAZCyQ-KZughlcHA1MBnfYXAYgT5NYGva-sX1jreOsLKGTjbOAMPx1txx9Hql0-pYmunavVUcf48Vh1XuRpa2JcLZDX5JjnUwsTH=w1224-h918-no)


Still in the clamp it was transferred to the R/T for milling the cut out using the same means- first the outer radius against the stop...
(https://lh3.googleusercontent.com/T0WeuDEjxcsmMWuMNAgwF4v9VLyZLq_bOilzzFMvNJyejOs-7iVCoKPiWPiiy-sKUK6-6E6hOjB9Jn7cu-0W7wkaJaFn5XgbvyA_1FQspeh3UG2HUu6zRJQlFEefrtVPDUKHP9iF90RzdLolj1EicDJpQPidTzqML_GQJDUK4kBLHs7faeugkQ-CZQyiyKLqolQU7KdtN0YlQDPKclCCXtaB1VQnup9hn8H9ZggTkTl77VI-YENkT3B9vz79XjUcYPCYTmbcWuFOD9DM9wDxMA0lJ_oQnIW_iTixGWEdKoUd48B3m1lIngM70oKTGLKpbNmmmTHkqDzImaZTWYnrHBDaIrsaSV6ureLxtRk9hzB3WHdmkA_Fml2XyODZXhC7jqM260vZ4lj1Mt8KgN7fMKEUpU-N8wRxBUpxmw4PPqkC1vnR3s9xa8MqPR-nol9XQVQnPzspyWemX5G2xOsHXKw_eZSZvR5gOV2yM9MbiaVoly4-eN63oE4PePZ7D2SfwmVs1G9u9hxYcymv6IIXMZuawXFqhprLGFMTxPE_oT-GmeHKtxSdk7tU2mBSMsxDeQlxFsgNgqLVKRQ3K6DwUXnPHgzxKmPfv9Iz3k4-=w1224-h918-no)


... then the second inner radius with the spacer in place
(https://lh3.googleusercontent.com/vxT77dkCm4EUSr3b9Kb_lXaVy80416nTCvKEhtHS6iVJs0ZGgko7sw4e1n-_V8tolZiB5K6rICbP4n2tP1j8gvUHzpwj_ccfUdaoS-lbfVHVf3kMVfba5Oj9G2RXxgoTEZOEU_E7BPe7xzQREa2m26_E1HqYTJVLf0EyCEbDoEEqvELqWfSJDxWuZ2iLVzXuUcyVg474hWq7CWNbpDkeltS1clEEViSkY8b8nAzRqLB1Td-sI_D1geArvyeS1aVGaiSkTxoED6wfuuEtkaju6UiPleJQAT-DyRas2wHldAj07Sygi7s_LMCBeqavGoygQdnMrRdPUJsw3V4gCEJPDJ-gPuIMRLqTvkixYXnMACxSq54UR0JwROHDvPrCV9HsZjxpXhST1ZuKqwoW6RG5Nomg2R_PKKpyeXh41SLOm8yfnkuqj7VTrWus7cB3DxpduODWf6w5wto4thhMECdpxXMUtUThPhT0aFAWxH-SwmUVrLVWpmuAYA9r79nvlVRShoFj83vaQBoJtJuLq0r8Q19Nd_WqqMfmI8yjcB4otm7AKq_TuFG3m_agDU3biLhps9evNhrZPVVhfLNT7En9UFJLRM3GEHoDf4wXt3aR=w1224-h918-no)

The finished eccentrics with the embryo straps
(https://lh3.googleusercontent.com/5AJ3WdGtS1aGCTTLyEw-Y6MZE6MTf3R3sEGimvY_NZPOpFzDF7E7qZecf__zKwPtDIbsCd1ZxcmaEgaafoX5R2C-neqJH2YMwVLswMgv-rgC25DSGKDAnVZo1hhHE16QxlCSHMQ2GBw5Bi0QXOokLLaU6ZVd4gGqtq6nTAaQ9DW-A-VTWQRNiGNm8mPCC92I7suxztSdfHLBq5VriRdigUX6HFoSiB8_ZuPWlF-eOuCOjGhRx9NY6wB23Y7GCeCif1RhTBDo3A92u5iJlnT4PEuKOTo3afnE1xaPQ9kltOKxbQlND5kslGFuUqb5r1nPF4sRjwo06yLgMhzIF5N1XHCkXdrBbo5lyszTF1zw2_jyV24vccLtUBIW-N99pnSs6SREdJb-glyMo2I7BRcdoaIxCCjpA0Em2xl7fkLL9aVKEEOZisR-Hg_idTcFcyKyqOx-85BOMBhh_vzdY6uaBg1r0_Sim181c-HITqDfy8JD6dA9f5L1a5U86GF2lyQL3wQz-1EKSq_Ox3xTLE0wm6Ey6UrzTjOeX5Ar2buSr_G7rNlMOutZNgVBDQ4YEEmcFCgStM-y3Nf1_OPbnJtj9QV_eMHIJyJym8MGeHDY=w1224-h918-no)

The straps were set up on another small adapter plate for milling the profiles...
(https://lh3.googleusercontent.com/7OWKlGdy0usaaNchLfsdR9cLj4RKaTA04fMin9iWF4QIX81mGE57pXfxc2OzlY_lxY4pGapFTvksL2CUmmBT0zjPpY8-hH3SHQoQKNL60cw_brzq_rihmIRNBZJSTUjh3ziO78LWt-pEliQeMaXArnyj0k6GKVRo-73hEzIDxHH3r6ixRTySxJxGOJf7lrhFfivaFUhvGMhSoTBAT8yRRmFDHkiyqwnAX76s1Uw4d5t09pixyydO2llCHVdiqLhy9gnlfpCuyw8c4JpDrjhTaHcwbg9b6Cqyi7B94JSEzju6TCXGAr8b8INUCXouAKRh2WyEVOkTT0tn-XdDDH6RkSDr1VCR300dZBY2y2eB9bLupa5TBCCXu-jmxsN65-phUwub_fdZmSS5XhWIFDngtDZdUk-L6y-HIYcXKcdp80eCn09CrMclGpz5kFPDWKC7ia2uEuqUoscBznaBmTp9xSbP1Vl1-IEftnJ-xog7Y-vhS0oC9aZD8N-Z0DKRzD4f5DRQrlFI9qALK_CSVd4OP9PGfdnJ8Tfab7JBKfajTrJcIabv0u8UVTBRt9OegniMYz6QcW-j0MRC66uOhSfl2yn6vWA3pOb9NTivMo-i=w1224-h918-no)

.. .and the side relief
(https://lh3.googleusercontent.com/saZTS8aL0F9WHb0FmIJ5maEvQ6UD2zol3ydOgkG2s8nnn78PeneEmkN8Ud8gByokj3n6aq41ikAN2hOt8vTYnZvp-Wsi1OM326lyhNhpJ8ydV_U8usojw-U9n-t_2HHMX-80mtUFHKhPGbFkVih_pNBTPLYgWuBhwnHboW9_b2nz5PwfW5hi02gTwwTJ-9BoJcBmAq8EhBi-fjkIC7c9Jw_JV56IcRKD-HQcWGrDUdZyCW9H6SXdzN9S8caqPmWKSdIexFyfNjnTZNbVLEtJ9JvvBCxEGgGUlMAhtCTPyJMHnk6GmNURNGpdcV7Ef1j01vJfJACKo5DetVKhO9Kq0GUmzG9wcIYX4XqSbU_maBHB0F9W7Ep5Rmvz7KZegWmPte_smoPBjFjaRpopur3mVStyXJtgn4v-SPV1v1gWijsFikGyx6JK5tegUSDyYtl9BaSPgFir7aQKnewC5MgFQawjr0qkeA748X9ndL_zUKl_Gh-998uUWPenfx-ZRC9uTS0SmrPf68s4PzQ260tErhTZ7UKzQ7_at7PP4-Mej9LPIIwBlNH02YEF_95m_Yd_8VIJZTt6L9qBuJbDTptDNdGtPsDbgGc8ubYx6s9N=w1224-h918-no)

Just realised I still have some more pics  to upload - too late for that tonight so that will have to do - I need that beauty sleep  ;D

Back soon then - sleep tight  :)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 23, 2017, 11:24:45 PM
Very well done!


 :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on December 24, 2017, 02:40:36 AM
 :popcorn: :popcorn:

I'm itching to see the finished rod!! 

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 24, 2017, 06:24:53 AM
Hi Ramon, Great work! Its really good to see this making progress.
The engine is very impressive, it both encourages me to think more about the Corliss as a project and makes the sheer size of the beast obvious.  If I do make one I doubt very much that it will make it anywhere near even the bottom of the stairs at Forncett. Even business class only gives you a 40kg baggage allowance! I'll PM Bob about the drawings.

Happy Christmas! David

Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on December 24, 2017, 01:14:53 PM
Is the purpose of the slot to balance the eccentric, or more for elegance?

Many good techniques on display with this thread.   :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 24, 2017, 06:52:47 PM
Just an update from yesterday before shutting down for a couple of days.

Hello David - nice to think you are inspired. It is a big'un but I do think it will be a lovely thing to display once completed so I'm sure you would enjoy making it.

kvom - I have no real idea but a bit of both I guess though given the speed of rotation dampened by such large flywheels at the time it may not have been more for balance but more the means to save on cast iron.

Well here are basically the last of the pics to date

The rods are composite - the rods were cut from 1/4" dia En1a round bar and had one end drilled and reamed 3.5mm and the other turned and threaded 5/32 x 40 tpi as per print.  The palms were also turned from En1a with a 15mm long, 3.5 mm dia spigot that located into the reamed hole and Loctited in place. A dummy centre was made, threaded to match the rod and centred on the reverse end for the tailstock support.
(https://lh3.googleusercontent.com/1xuQgvbX0ZRGapyJSQn9Ris78DtrYSo2e_LZzE595k9bMJlhL8U7-qce_fD9cSGT0ORjy5MRx3AsACi8mW6uYU3SPtTHdGNSltMHr6I7CinDW_lWzNycKkzVkD5fYbl1Knyd9Wp9YShkjV-WqtbHQPOv5S8zZIYcuX8RgpBXsqf0i8p5z5JFyAmrd7RNfBIEJO9Lkw53PFsAB4nIWVYut0_wqcWVPwzksQkPK4OOroudEWkmzqQinMI0bM_GjWQTj0EGGCxrZhrXUMzdlyV4-eMa1KCJ4hrnUmqBDvlv2ulDRTZg0NYlFekZbJx8jOaLWyqm7vgMaRHG7udL2uJumC1ZgWkSN5Fntwn-x_n7SViUmtgjQEHLC25g-3lvLxicTGkSFIgmXQP1K2H0uhDaT1mw5ExqK0IaZ19DezaRkvwEZSQbi7drEqiC7NSC1jNS8TAQFMZMBPX5f4TWWBzsWGr6DD4ukuL1zT-lAgp9946f73TcxGbzhtIZevGmTXuV3Dl5Rx6YkESY7Cy319_kTO6jREeJnOecVRz85mUX91j3NVOJMrhHp75GEyOXieHCmAHOCZZYbgaiKS88XdtI4iUKo879aCU7pozVIsc5=w1224-h918-no)

The 0.22' taper was then turned in stages utilising near the full extreme of the topslide travel, particular care take to get good matching when resetting.
(https://lh3.googleusercontent.com/T6NNh0zQqmff3kUD6YQlooU808rvjyEwQjZhBsEKYRifHbUBMP4o69cXcZD0GAdjrN-oMWDs7s10ocNoPSxuZFZY0_mRKU6mj-IEYeMJl-S_VQDpr3XSUCqyjxfygWohfDzNS7OgH8G-kyWykLZrhPGGQvgPA3-8hMFzdwIF-5f0Rk8tQosHglRZAj6o0FRXKj5mjccLCw6r8V83gvduMQfwPpNOE99rmbHvCTfPOp_59VjDwgoQ403JGpOXhM2YBwdMqynrdkWCiOe5cAJ-t87h_lxXONbNDCgCgqY-5n1I7R68-Z25N4hU8L-W65k5jJRAxHagPKXEQ4sZgiL5xyunAgG2X1njE1OZvaph-T-UCNK31IMvYQ8aU8xJEmexTebL8PyqTCMbdSSQ8apYgbwCCXpSbmiwGVEpcOqWt-8KiXr1u-6e4bnqx9ABvecnXni7OZoCOY5nLS28JVHvjmxyM9snjBxQZAKrkTXwQjlE7kMkuSUXHRd9GabOiIaz-d3WIp01lEyVLySIe2HRcPiOEe8D8rbvuC55iWjyi7SR8kHMTR6Iwsnyl9oCQCsQtzpLDaSW6i7t0xjvfiHiWiK9idm7d243E0aQESi6=w1224-h918-no)

Once turned they were finished off using a mill-cut file, emery and wet and 400 dry paper with a final polish with a garryflex block and paraffin.
(https://lh3.googleusercontent.com/RfbmQ_xenhfz4aCplfJ5_Tvc9px4hoxC3kl7qD0qOlODjDx72_fpRUGjEd07C1-siVuIlkim-X0fH2ovHav5FMdAmpM3SQGA21Alc_wNVWQ1T1UmZoEFU9c1x78w-ggH83HIcVteEWVq99J5CteRNbmmGHHFnwCNzAsJno9HEDeLRIwCzBMfQLiXORkGmgWQBYJx7vT-igEj4hti0NdGsGLACa3EPNNVG93hj3DciypIS-x8gH1bLXtJVPcVhjCfwYiW7xe-AZcUMZS3_yljIM2B9Dwz8Bs-dXy7s3eH3I8ehqooystkVK-T_RBR8rzYtGyXi8Kd3nV3pfOr6HKtlaJRB2FClvD_b5Cx7T8RWj5VXCBR_dNLbQ0pp8EJ9PeNgnn5jKgnbL3YTeON8zmY61yg4qDlebpFZmS6XASWSrQ23yLhhx-8UF8Z86ZrZRIDeYbgwjxPFjguL8dKJUj10ebcySR7Rhi_qGmm6L1s6QxDVGP9bjteEzAky1V__4z2f_KxryUxfWrAtcBi4mdVesFR9or0n9Z2KFrlgSlY0jw0eLHAHSVnjNhNI7kEYxNMQ5WtSH-BX07stYYo3K9BX0AdQ9jr3cHb4f9ZqCpI=w1224-h918-no)

A simple fixture had been drilled at the same time as the palms were drilled for holding while the palms were milled to width
(https://lh3.googleusercontent.com/E0jczPInr-MQ8ahZje9ua9eT_2_S5N3M4lg1b1mP8W6gQD2OVUMptfv_AAVSGSkHzqJNCfOIG35Sk8B0b3CsVKh2d2Ehn-dEt-Tk8y8zYgxWNteWO9WHVSDRWZu-eWqOUQhqhIlJSpXbsK0n3hPucTlHbjA-81iVZUYHBME9Sc02goifzWnzW6sxxZOqKxT5s1tNz1m7vdi8PQ_XAhWyXKcnQMkwBg85BXqDqkKhlHnEJxaxasuqyDbji343do4e6Q09J-k26u4VSt0CihsQ5mxoyeEkmiKBxc8HHA85Oj3BSax3BZedfonGOAio4czIOyklfkL0_pww9V7cY6hvvJL4vq1ZwktWWXy3UdNi2NlhUZN-gNilM-gEoR6hxRiZ58kA9mVFAHrb5MK6Zwg1u1LkxDkhM3tysOmwXN7jru3cuz2WghXlnhpyMUcZGeQZg-Pqs7NLmEIB5D3V0xS5VGcM5LmbL19zpXogSPZ6spBVtXwKQMnD4dqhp06FvnaLHUSGVjBx7_fPKvJUZyzYgIUC6lucNU4wtxH5RSJxYMZmdtkkkq0eHQRCB2Izd2BtFiNh7vLjp6z8ABK7KWgn8i_binPyDwW-DhSletiF=w1224-h918-no)

And finally they were ready to fit
(https://lh3.googleusercontent.com/acCIicZ9Ignd6L0nbaOub7HYYU0aIU9CMG2EMyyNWCyG_TxE1jwyLaJlc9AlvI1qZFIlcErXSxCbnG-Gju-xupfrVUEwuGsDi_QI6bRWkaQDulMLQEuKPMduOsLQbbn14DRtezUgfE232Fcg33jaCzgt3u-M01zEG1BWVM57mMpromJXz9CwgO3JdsWux52EQnRfCvj2rMHRqE5VBOxI6lxLgYYcxj9dAgE0cQ9Tq7FzB_VLQ6C7lbLcf4DSKPzamudz3FeeDw3hCQ8PyRbGlpNIVrIFxS1igF4HzR51IbpnQQZcNFD2t70NARC8cWqYNI5r1Jq-foGUYFPj_YBgFgniYLwr90nqWnX7S11BVrFmN2B456WmErsoVwsTnHQDSa47QCn94aFdrYGyNudwrtvIxf7qjdJF6-pXUDuLJP0LCs32PmzzeoP00-RqHlZjblzo409hcV7tboIsaw10r9zsoLR_drwevFNzGHq-zM5M9hp2eDp1yvnhkbyxsPIHHQ_gQ-3lbq2EKpmCgmAnioSzN75g3APBnfaSo8a6QCGeBqysuxV2J22A4T4bvwrx4EVpQ0-XmalhNM06CkIhUaMfqN57lyCrQ0PD_mxe=w1224-h918-no)

The rocker arms were cut from some round En1a, note they are bushed with bronze which by doing so to as many points where it's possible will help keep friction to a minimum. The pins are from En34 and case hardened with the screw thread an insert Loctited in place so that the thread will fully engage to bring the face of the pin up square to the arm.
(https://lh3.googleusercontent.com/p6eSKqrEs7DsVTyq-rmQ6za0sM7EK_KZ8dxmcRF4FtXsVq1Ifb9YLt8uSxB0GdUXhjrWQKmcCCFuFrD7v8ebFO3GWrfWu66eig0iCdqDDRMjnlZXd6lPdpLXE_pINd9vImWM8sic8uAotGlHf8zb8Pk-gfB0yCVLll_xvaBOpZV7bfZUeAfCUr17SfYhFQMZPcZ5bWNIDLwsSRNvO9y44YLgWetnZwYu99tLbcoylmhaYczJgxKNl8xybXP96KRli9AZGkZX_6tl5R29VssyHu4ngfY8Vtp347PzhFLYcn-05Ex_vQ7zf1MGYJG0G5AA53hF7xOF_7Ykpj1r4ex-z-bew88noNTv-hDsKWQfGc0f2QFNHuGhip_yVDCtpyxGi-ITX1Ahkhqn8NvhcF98526LyqppXijf98M0tQn5z1Yr8VYaFt4_RtV6gv4s62-Z3kmC9Wqnogr4nQlvUwr9hq-k0IcgyBojiZZqwr5MfxG-bVrUR_mFOJW9h6fTQMVv1AYTurG_0sQ_YdNO6HwtlcGrQBbE6yW5-a4A74OiuwHImJjoUr7Tlg14oPxMCZnXcima8D4KunwlSZ-pQd4QbyJKm41pq9AGhN7Lr6Kn=w1224-h918-no)

The finished rods complete - hope they've lived up to expectation Pete  ;)  The engraved marks are for setting - the crankshaft will have marks engraved at the relevant places according to the drawing
(https://lh3.googleusercontent.com/CYKHSs2NDdcySaxpIpNrjGK-23opD2J-b_lNczIZgoVhVGpQAFwp7UlygJkhWRfLltTVQ7TY4UYGla-QSTgTzL6lusxlpuI3X6FR-aFrRIADWxPUxvnHhyShskiLi1bkFDtrcNc6OH6_pkJ29kS9epY0JJWNgOqIgE5W_Gu2ybg9TRkO2oAjUaXRi8qiiIzygy4Ld8TpqduqcWyjxdiTdLXxZ0mcZtc-dAfF-3TlanAasm2pFjBgY7zRk2XfCEQqeIYi0MO1ZZQPn-8seJbtsfJxPBJpC958hc8HK_UA2zr103v4w-SQ8umfzF6pIRZ8byWmPd6NVQMvxCH6WHx_NAXZn1Oacxj2vIcu0kwQbY0-o-vo_XlQa0yYxh-uKUV-QmQidM_A2YuzFUT7ts7gw5y1vfi3KFK-UMB8XNAEauyRB1MmDuWnIf07_8whn3annXBfthPnsYwh_lF0mwpbSnYuM2m0v-rBFjQmHXT-EbfhUK093P9XAzNu33YA3fpLF-rB8rqy5bgNQlkWznbfed7dFm57XFuYFdvyDSv8uF0aHWqW8vCQGsRiKd19oJIri9n1iFYjt5_4fehKDlf6-PrX-Kno_4GnX-QqnB5F=w1224-h918-no)

Well that's about it for this side of Christmas guys hope you are getting something from this but if nothing else at least enjoying the journey with me. Time for me to have a couple of days away from 'tha ol shid'

Have a great break now, back soon - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on December 24, 2017, 10:22:54 PM
Tug, those rods are beautiful! I see some details there I have filed away for future use. Very lovely...

Merry Christmas!!

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 25, 2017, 06:19:59 PM
Merry Christmas to you too Pete - glad there was something there you could use  :ThumbsUp:

Tale from today and no, not from the shid

I have a very tall Leylandi tree at the bottom of the garden. Knock comes on the door this morning. New Neighbour. Sorry to bother you he says but my new R/C helicopter has landed in your garden. There's no lights on the tree, definitely not a fairy on the top but it does now have a bright red helicopter with a red light flashing away - near right on the bloody top too :lolb:

I think I know how some of Boxing Day will be spent  :Lol:


Hope you've all had a good day :cheers:

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 25, 2017, 06:35:54 PM
.... There's no lights on the tree, definitely not a fairy on the top but it does now have a bright red helicopter with a red light flashing away - near right on the bloody top too :lolb:

I think I know how some of Boxing Day will be spent  :Lol:
Training the squirrel to go fetch the copter?!   :lolb:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 26, 2017, 05:10:16 PM
Well the squirrels weren't having any of that Chris so Sue and I decamped for Dunwich Forest for a nice walk in winter sunshine.

I did put a double ladder up yesterday but need at least another double one again from the top of that  :ShakeHead: so there it stayed, the red light flashing through the night as a warning to low flying bats.

Now - to better things

The crank was milled from a slab of UHB11 - a nice to machine bolster plate steel that's equivalent to En9. We used this an awful lot where I worked and there were always loads of offcuts - wasn't going anywhere but the skip so scrounging mode was constantly in play ;) The new cutter discussed elsewhere on here performed well leaving a very fine surface despite the look of those marks
(https://lh3.googleusercontent.com/l-2dDap1r0464IYX-0wwRSX_qGRhPNRIAam8GH6EfgTxx1h_V0pYhS0gEPj0ZQxz0RRAcQtX0yXU5zVV9cq8km9c0TayTxd-YstvdWWHm-AjkK-c_mFK21VsTtkLB7mNc2UN2wqsQGqFELccsS1N85yfORsEETjK_nNuD8j8PVgJu2Vf9HDCDWrA2GY4DXFM8f87B2Y3O4aMbTyY-66J84QaazSOjrnsEbU9cuo9OTdDt3sqGx72LPs8a-iFewp9TjbpyadxhSlqpv42LR8oiMjgQjBnPuNx8LO5OwEVxGpEiV4VGZvBk8p-h3DkHdwbSu8lb_ZtJDLQKBkc4JIWzu9AnLSDzuye9viifRJVa6-8_3YUjjGb6yQ_OVy8wf6n6DFW4t-xLG1brzLFau-PFiu3lfUyCo1_QRIgg0uBmYl02NmCQYIyTi5K7GINlQzdhC6NJvATFYt4ZnbqKUgTEooAJ7PcchD23pLcH6o4xreYtoXUjy2SLa1TP-_HY2wGjnZIKH4FVbnij_MTlR2F9IqJud4MU1afAyUqmSKIzTOim9gYZDQekVp9APlc5ixrYIGA3C-I5auUkMErPkpV8hdBzv6RMESGdLEE_iOZ=w1224-h918-no)

The holes were centred on the mill then transfered to the faceplate for drilling, boring and reaming
(https://lh3.googleusercontent.com/e7OJmIfqtbV44oqzhZeoLO2F4AlFpEM8AFTSrwZB2hUr6EUxaaHtVgaZ9Zujj5aSNRdC36b2GKl6tqG5RwmrIgOC3dfetAC1YeNTBLNQcH8un06nXdvqsHrLCD4qed9wBq3lF9gc9ve8fUP-XNgVjXuhXYWE6stmFPoqE88SaqKKR8Q-XEDtQY4UikR1_LG5lG0ZvefdC0TTwKjeJ51ccFepKkB9n32KmE1RLcv8wCInzkNnjcdRnksY0DJ70Q2PMSFlzoQdVuTo-Yq9dnKb1-6vSbO6I9cKOQH3MHSh0dQPe5J2jfbOaZf5uX6K4xnwK3D0FW_iaOe1VKs0Qe5dWdRFlx2WmjgQc6HjCya-_Aiq6gBgHuHxKZJQUWQ-KqexCaMlDfcV_VT7BI6DB20cyt5VYB_G-Nr-2KXG7CuDdhd2go4mBrd_UhNRUwMl-Ig4YqrFmxhAn1zB-N5gwbzcRPyJKfEm5ia0fwPE5umppxGkYQls4F0xeVrVXiKtXHH6qyZNBdE9801jeMtQ0_j9XKjsmv6TBdRc-R7R8q0hKyxBI4z1oS1HANHRt2Ybxz0-f2TPTI7j21W80n66YOlJOrGXeBLqRGHYWV_XGtzX=w1224-h918-no)

Back on the mill and R/T for radiusing
(https://lh3.googleusercontent.com/oXpvWcAvzKCCY9zwUpSdB_Jxz6hi-64_qCwfxICExiBi7Ooydj_OcrQ-KLgxP3a12LBq1QyOMWe4HgImMQKFzTXZPJ2Wrv6vNp8VVkbuN1hP2U_JCTzxEln0sjVQI886rtbWsifoapQyjscIJO6Gdd9TqMqIda2nE8XJ1n2gFB8-pwYLP0ZO9aSc45VLJf2iwXtcbbypzmRFeNfHbUgnR3Xel4Hp5Yoq4MbU4pcxBfr4Y59jVKEWHX-AlEDkPy9NOvDsJ4kWbTNG360iY9HN5AuLVO8itX9fdXpBjs1ooZ2GTtPwYSH78CBK0z95z07bEbREGJ2WlFR83PNsK6sAdjGhb9sTbzo-haS-y6-DAUvKRbTEuh7G4aD1A9ZAw12e4i2BV-MxdnSSBWns3k4eel_n8B5KqJxpGaGoKxvMQBA0eBAYV42KoqDpsICi4io6fT8RGlcfoZ_jMYV8tWIivhJIfeZA-s2yboZgIR2T-l-bQIeL0BZqAgRBZnDAzTE_ktKbu6YcMC4G_kPfvVKK0H-8Lur3A8WRktHg0LS0t0DTnbQ6InPQPPhMg-oq3AVBhZe2O_9vxyhjTaVaNgpwHnwV51DjoOfAX4bXnzow=w1224-h918-no)

Finish milled .....
(https://lh3.googleusercontent.com/vhXm8cVXJWDAxBooW3bgE7IoD4QLPk4_lMYjFjvitUPq2FkhfbM8MLLSjDR59kP5L3TStkun1b2w5i0Jg6BzC8pQ8-t-3s-7PVlpu1m-YrTKZymZc86q5DCMyX5ZKNqSVgLz2KUSljDj2b6Ownjoe1byqN7e7xzfW8Gi-bQWuQx2cpygT371YL5k9SfMlhhHVIm3Tzi5HQcS4na1zeElp_bQk1vaduOMsIuIrs_ClJL85ts1SuyoV01zni_Uo8GBZCknoiGUzlDbkeAoaGos16aMQwFXYNdERw20vi1AfNr02otEvwCrDljZFoTJUn8oHbyoP7xBUY_GKxkjg5XX0v1E1wJBb4gs-p1S-ATTGtvAdtCsYJ_ky5rel3AddTvGgJdy0L9xkagbjbh32pishoJQW6bDgCj6EjsgqLby313EBNabclmyqIFqOId4UZmzA0Kx_w5JbEp_niJt-_wtZLtxDpTuZH65q4q980jMUEpmGY3CzW-Vb-W2yozICZ_iCMkk7YJba-5iJuZ0ev3DmRLkRBZDmbm9hFzyMQ9jgsTuYUuefM9D7-fGGALlHjV6pQsPkQUaiOcnfqTpdd5QynLDn60eeb_sW6mI0Bk7=w1224-h918-no)

...and with very little work with a fine file, emery and wet and dry paper ready to fit. This will be a Loctite and pinned assembly as I want to mark the eccentric positions on the crankshaft dead relative to the crankweb's centre line
(https://lh3.googleusercontent.com/TEJ_xO3uVy59M04VJekobo6ti2VSXWFTnQ0ozkGUa1T_RXDLJfvMZ9VHc7OdIu6oP4_DC1Bbd5PZ_uex_PYxZaDV8O45bPFRpRJW5IDXhNXch7plY_9X0ttQkJpByOKjSR590QNrvkIZbMZtiSas0JotGWv2zVXGS2cjj44ldNMdi1AS6LLJgs9rW7q8fxMXes1882Dhx3pOQTHogNalVapv1oItsexVJJue1TfkN7m2dvVbX_oI_nkiZUfOjqpvHPQufnb21_lY3ymuDaXR6tXqIiiF3zMC-Rps9l7IVO7-81biLECtOjbBv_LHePsc0RippoqohsSuN-6T386t_RypQazjFZMC7bUSg-9WJRe05gTENEM7E3Sdx_Xe7lPBoGnFDPA7wdAJCtJGINs9d6_uzFg5DrI51ImG3otHEpa3dHVUR3EIfg6m7PtQHX8DrOnXcHPtgpGdmDSoLFcZHVvUfVyz0Ig8UaQ0xHtODYB5-FaBKGQdVC3q_qJUeSGEalCLdQ0WvQwha7oUMas8ELniDFtDYM7vO5wehIw1nc9HNZX3khii6deB5IXDF6DK6o7tBd1VFhRmENSsv_zOAQcQtCmtGGKcJFM6eeJX=w1224-h918-no)

Well that's fundamentally the current state of play on the machining so far. Here's how it looks as of today.....
(https://lh3.googleusercontent.com/jT0CoNCxKmCy9abTnwA86hndblBMA9P6nHONlFC-xkZipqjC1rPn0FP4KJAWLicsEmPYYZwNorpQtM8eAOoxCQU4goDsijKL8eiQ0sNY0fORYLC0hk5nLMIClYCZaFozrQYJsotqyOp-1EhS3-1q2gJhmVgPM1EA5xm59PsSywJ-36o8VVrl_iBwBMYiDMNc0HhtvjL3B2ZLvrUUthJq8hSJbSZNOanb7S0I8zP_SlRgVVDuW70LrOwJoYjSSCUyXM0I5isg9TjHBOfvBdNuAxIXaQr7BxngUCy9D5EHbHui4Xpo95QiWGzLYImmxqBsuHt7IjakAzya8PqxlGl140-OVAThm9lKVr9DL0TlTyIqZlooLKT_efs48F1BcVASRRjOxPwxQ7kvavf4JTFx2WLwIAHoq682mxWCsQ8dj5DBVuVjvUWIhRW0VouAF8TERmS-VMRsMl75IwX-bMF3LzadKLnxyE_rZ2meloCNFwhzHWIQMIRfqbFhCk56dSXSMvSpypSdsevE_KSB2SOdQfR7Xg6_pyheVjCYrn62oI8UlW6q-JlcJvve7FZDW7EPSUAqciZ2l-4erRq6Ok_ZTEVMcU30St9HLo_qnJFi=w1224-h918-no)

(https://lh3.googleusercontent.com/Z4DaMP8YmV2Ne3qWcgsVALbbe-X9t9Qd4Z-qCtFCU-BfsaQOie-hnBFG60nnwBTgzOVZvK1j05rB_qprpSH8swq5JEXmt06JzJVJkdpKTWKqmtXHUo3B-Nz0MKIPj-M_Jwc8gyRXWP0w-4qXCElLXSP9mZusVfZ-oM82K694Jy5aWA_kdxaCtzRkRJJYUTulcA7axZxH3I6YqSCqugaoPMv8LBIYc85cH2pRPBt3Ej91xVbZQSkave_LLr5myaSVpMiRwDHtycmK4TAcwCLhw6ftnZqG2AqPhtcKJwuFADexTXnt2li5qeWEeGa44qJMF-7Nr4TlDvAisMAoaXQJjh-5HZXvSFn7nPIKg52k9_EhzfGfWLjUEdeWw2gQ40d1qZg4AalN4PTc0lTdDx4FXfh3Fqj2WYaPeeGQWTqLblwnTwrQo9R0jc7h8UQ0P9-9Ndkc18-WfkJD_WK4_VsFZO7c5F1HzJjCcCfV9j2N02WTBndvxAE5eqiChNfEdS_IxRJUhHcWbxggdNzhDZZGn-YEN87lIBXgz9Y-xPxKVaV9w9wcs8IHdKhISw4WrDwKyoxliaASpUKOC208T2Dp4A-d70aTHWk9G2xO7eLJ=w1224-h918-no)

(https://lh3.googleusercontent.com/e9VsrHWMoyLdiciH5Am5RDh71bewiG5-z2QfN-lJtv93IX_JoDjDArqLkwrSJ2J_fzA-ne8MZWYbgC2AcwH38YPgrttn3KjnZxN-1aCxHFXTzpbK-uL8cd9TZNXExzIRAY5iV2dZoJcmO6JJRlAUGWD58neS-CMdbndhf_dEDSkk6ST1fU_tZynS20Jz6eY22KqXO-Bd5qOVbHKsZPyli2P5M_ivPSca9Npf9qMI5ARUfDhxk_xOg3lWyp7q7Q9UYpuJOh2mEkMhZVZGXCPfgj8wzVKPJjT2vp5TePsG7-_Go1bjH86Aq-qECBVpiisoP-ranRG37bjIJCe6HSnVLYrFaRTluZdBf71TZqv1ZZAYpTvZnFSEC-_fHToeTFIakUeeedrtn1nvQg3faMQw_4pLEwSUTviyYLXtl8He5PzfUvE9PHmdtHnBnZmfYqObvphaLlPPmGCs-V7daQzm6VJMDlnM_-WWaMt46dLb_tyLg8jzv9WhtgQKF-KK311YZXfCb-MK72TvfvvioSjAq6nmOAwXknILXQBllL6jzlldB8GTdD9AmGyafRXKOP_L0tfB2I6AhO-CtKhQ8jAk4RoZhn67PxLJlCgJuZwL=w1224-h918-no)

(https://lh3.googleusercontent.com/xvwwXrD4OOdI7ds9ABAczKWp5oz1nsE7c9StJgvEteN2lBYPRNaHkrii_KgIA2dSIemYyrhvJsndWfHQZxGbDJ-rG37ZdXhwhHX9wEsqp1M_wdete1ly4RQT8IQGx50pvw2nPv0cL5FqkZ4HVrFOZ7T_LIDvmfKms4rOOoDX6JzkUsDXXDZcpqJ0s8NodwSap3EfEDrvR31mx56YkbhXYzVrFrz8bALuZ0a_Xj9k1EKu5n2L1rAf51lsD8gEjMEJfiEaqPfSM4G6F2aG2ddGojWd23q2eRGXr8AotycXKVDQqwNPC1ilj2EcRROm9BWe9pxd42hRNnP-cbSiOgKbMYqtMYHqQAmX6ZkNI0s5TZm-ZPcj_Ext8BfNDTxQeY5iKhHPUFPLTnYLcc0pG1L8eTMRUdl90MKE33onfOX8fDfXs8ARjckz6YAz8ZUWc-ZF39MQQnCE8qhNBy4WzWex78MgAz88ZQy5LC1fHvt5RiwCl7nY2V3rJv0et_-7SwlhSGa-77j0GDuinzM2L8NiphkwPmOeBpDQy52r2u1pUFgCKcmWaIw01G8uknIh5KoZLWjgHaJMPExiy8dOWFkb2hDicgQqD80-PAWd2e6x=w1224-h918-no)


The governor parts are working but have a very irritating 'gear meshing' noise even at low rpm. The Gears are ex HPC and I'm reliably informed by fellow engineering colleagues that straight cut gears will always produce this sound. They mesh very freely without binding or backlash but I'm thinking that possibly reducing the driven area of mesh on the pinion may have an effect to the better - any thoughts on that would be welcome. I have found (Ebay) a turntable belt that fits perfectly for the drive belt - the one I fitted to the Waller engine so long ago still working admirably.


Here's a short vid of the 'working parts'
https://www.youtube.com/watch?v=lxf_lbvzpEs


Well that's it for now guys - I'm taking a short break from machining for no other reason than I want to break it all down and get that plinth and those bed plates painted before I get too much assembled. I also need to do some work underneath the base to accommodate the differing pipework from that intended.

I can see quite a lot have visited though very few have commented - but if you have found it of interest, rest assured "I will be back"  :D

Happy New Year to you all

Soynin orfa tha ole shid

'Ole Tug'
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on December 26, 2017, 06:35:04 PM
All looking very nice Ramon easy to move yet no slop or tight spots.

I wonder if you could swap one of the bevel gears for a nylon or similar plastic whether that would have an effect on the noise. Or can the box at the base of the governor be filled with oil which may dampen things out a bit.

J
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on December 26, 2017, 06:48:06 PM
A couple of well placed shots from a nice side by side Holland & Holland smooth bore should rectify the ‘copter situation  :mischief:. The build is looking super and you seem to be getting on with the new mill quite handily. I sometimes think a wee bit more gear noise in a model is desired: sounds like it’s real and not a model. Haircut; ha, all I have done is the fuzz trimmed, hair long gone  :lolb:. How do you like that facemill? I have a couple a little larger: the one with inserts for aluminum cuts as smooth as a squids belly and the one with the inserts for steel sounds like it’s going to bash the spindle bearings to Hell   :shrug: .
Sign’n off frum th ol shad 8) ;)  (redneck translation)

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bjorn_B on December 26, 2017, 08:28:44 PM
Fascinating, I admire the work you put into this. And as usual very well executed.

/Björn
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on December 26, 2017, 10:57:29 PM
Great family shots Tug!! And thank for the video too. Most impressive. Keep us updated on the copter situation too 8)

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 27, 2017, 10:49:22 AM
Hi guys thanks for looking in and your kind comments - all much appreciated :ThumbsUp:

Jason, I think the idea of a plastic gear is something that might work - I think I may try to make one from Tufnol though the tooth section is very small. It's worth a try though. Simon - 'Sco' - has promised me some special grease so that may help. With a good seal on the face I could try filling it with oil too - all these things are worth trying - Thanks

Eric, 'Whiskey' - if it were anything less than what it is I'd agree but even at the slowest speed it's out of all proportion to the engine noise - maybe when its all working it may be different but at this point let's say 'it needs improving'  :(
As someone who is not so keen on using carbide (that is at home, I should stress) I have to say I'm well impressed with the face mill. Those rocker arms were made from a piece of 1 1/4 diameter round bar which I milled down to give a slab about 13mm thick. It certainly made short work of that. I never thought I would see a tray of nice big blue chips of swarf  in this workshop for sure. It remains to be seen what improvement some decent tips would bring but the cheapos that it came with are doing a reasonable job so far. I'm that pleased I've bought another but with the circular tips - hell does that meant I'm a carbide convert :o

Bjorn, Nice to see a new name here, thanks for your kind remarks and hope you will enjoy the rest of the journey.

You too Bill :ThumbsUp: which leads me to...

.... the more pressing situation  :D

The helicopter has well and truly parked itself in one of the topmost branches of this 60ft high Leylandii It has taken some while to establish it's exact whereabouts but Sue and I finally pinpointed it. It really couldn't be much closer to the top if he'd have tried!
Out yesterday, my neighbour took a look this morning in some rather cold, wet and windy conditions and made an instant decision to buy another one  :lolb: So, not having access to a good double barrel Whiskey, there it will remain - a reminder to all that flying model helicopters in built up areas is not a good idea - particularly on a Christmas morning  :Lol:

Wishing you all a very Happy and peaceful New Year  :cheers:

Yer ole scroibe - 'Ole Tug'
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Mike OConnor on December 27, 2017, 02:35:48 PM
Hello Ramon,

Thank you for posting your progress on his project. I always enjoy following your work and learn something new each time. Please continue when you can! Your efforts inspire me and am certain many others here.

My wife and I visited London this summer and saw the Corliss valve engine at the London Science Museum operating under steam power. It was most impressive and mesmerising to watch. I am sure your model will be as well. Thanks again!

Kind regards,
Mike
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on December 27, 2017, 03:02:51 PM

Is the purpose of the slot to balance the eccentric, or more for elegance

Hi, I think that most eccentric sheaves had open slots and profiles originally as part of the actual construction requirements needed to fit them !  lots of good work here Tug and i will catch up at the London MEX




[/quote]
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on December 28, 2017, 08:56:03 AM
Just catching up on this build, a splendid if somewhat large engine  :praise2:  :praise2:  :wine1:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 28, 2017, 11:29:06 AM
Hi Mike, Willy and Roger, Thanks for looking in and your kind comments.

Mike, it's always nice to see a 'new' name so thanks for taking the time to say hello. It's been many a year since I saw the engine in the Science Museum but you are right, it is a magnificent example - even if it is all red  :D

Willy, Yes of course you are right. I checked my tomb and it's obvious (when you read the text and not just look at the drawings for inspiration :facepalm2:) If the eccentric can't be slid on from the end then it has to be split and the openings are there to achieve that. I've decided to keep things as they are however but will concede to scribing a dummy split line across the centre ;)
Looking forwards to the show - keep me a seat up your end on the coach.

Nice to see you here Roger - large it is, I don't think it will be going far once finished - cheers to you too  :wine1:

Decided this morning to definitely fabricate the air pump - not because the casting is unsuitable but I think I can improve on its looks a little and won't have to worry about how to hold it! Poking about under the bench revealed a nice length of 57mm dia En1a which is the exact size for the body - Looks like there's a bit more swarf to be made :Lol:


Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 05, 2018, 03:49:49 PM
Hello Guys,

When I posted last little did I think that it would be the last I would see the inside my workshop until today :o

Not only did my neighbour generously leave me his helicopter on Xmas day but he left me with the makings of the most awful chest infection yet experienced and I’ve had one or two good’uns in my time. This has been different to all else though – next to a pretty severe kidney infection many years back the most energy depleting illness that I can remember. It came on at 9 o’clock at night, out of nowhere and has completely wiped me out physically for the last week ::)

When I made the ‘happy new year post’ it was under the withering look of someone who felt I should be elsewhere  :slap: and that’s where I disappeared back to and didn’t surface for four days. Now the position’s reversed and poor ole Sue is the one needing the attention. This comes on the back of chest infections that had laid us both low through November into December – not exactly a position of strength to fight this one as our immune systems were hardly 100% - They certainly aren’t at this bloody point I can tell you.

I know there are many who suffer from ongoing respiratory problems on a daily basis – My heart really goes out to them for to have to live with such an ailment on a permanent basis must be truly awful. Though it doesn't feel like it right now I am  going to get better - to think that that isn't an option for many is soul searching indeed.

So, just to say nothing is likely to be done for a few days as yet. All I did today was to creep out there to get the drawings so I could at least sit here and get my brain in machining mode but I guess it’s a start.


Back soon with some more tales from tha ol shid then – ‘Dew yew orl tek kare o yerselz now’

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on January 05, 2018, 05:59:44 PM
Get well soon you pair!

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on January 05, 2018, 06:22:35 PM
Me thinks it’s some sort of “terrorist” activity. I’ve been battling the same crap and had several employees out with the same. Hell, we’re an ocean apart  :thinking:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on January 05, 2018, 07:54:04 PM
sorry to hear you've been unwell tugs, hope your getting plenty of rest and will soon be back in the workshop.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on January 05, 2018, 09:26:09 PM
Get well soon.

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 07, 2018, 10:27:22 AM
Thanks guys - yep turned the corner but way below par at the mo. I think I'm gonna have too see if the ole shid's still thar today though.

'There's so much of it about' to coin a local phrase - it seems every other person's struck down with some variation of it or other.

Hope thing's improve for you over there asap 'Whiskey'

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 11, 2018, 07:05:21 PM
Well guys I hit tha ole 'three score and ten plus three' today  :old:

Made the usual pilgrimage to my last place of works to take the guys some cakes and to pick up my prized calendar that they give me every year. It's a lovely big one with oil paintings of railway engines on by Philip D Hawkins.

Raided the ali scrap bin while I was there too and got shown the new Haas machining centre - nice break from the past few days for sure

Still on the mend and still weak but but hope to be back machining tomorrow :)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on January 11, 2018, 09:03:26 PM
Hi Ramon,
I'm pleased to hear that you're getting better. What you need is some warm dry weather - it was 41C here a couple of days ago.

Bob Potter has kindly sent me a set of Throp Corliss drawings, in A3 format but big enough to read, I'm still browsing and dreaming...
DT
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on January 11, 2018, 10:18:19 PM
Well happy birthday Tug. Scrap ali, calendar, and a great birthday dinner (I’m betting) and you’ll be ready for the old shid tomorrow for sure. Regards to Sue

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 12, 2018, 09:37:45 AM
Wow David 41C now that is warm.

The weather yesterday was miserable, good old east anglian 'mizzle' and 'clag'. Hasn't dampened the spirits though and today the sun is out so I'm off for a day in the shed.

Glad you have some drawings to peruse - I had a call from Robin who bought the flywheel at Forncett - he's been talking to Terry Fleet and I've pointed him in Bob's direction - he has ideas of making a version too.

Yep, another one knocked off Whiskey, who'd a thought it a few years back in more manic times - makin' 73 that is  :Lol:
Hope y'all well over there.

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 19, 2018, 09:50:32 AM
Aggghhhh - I've just sat here and done half a post only to hit the wrong tab at the top and lost the bloody lot  - aggghhhh double bloody aagggghhhhhhhhhhh!!!


Hello guys - hows it going  ;)

Well I'm happy to say I'm near back to normal and have finally had some decent time in the old shed :). I began by turning that piece of En1a into a length of 6mm walled tube. That dirty swarf covered blob on the tool is a lump of sticky blue tack set there to take the resonance out of the tool. It doesn't always work but on this occasion it did. It won't stop real chatter but it helps and in this instance took out the ringing and the fine chatter marks that had resulted.
(https://lh3.googleusercontent.com/f6FTSR_dQmdkxfipvfvsrFkMXDpT2lltNMdpSKlOxg4VzmJyUCBcfZg4fnMVGiYwTYvnqeW3tYwKGOrmJMRku3pXGwf2Q9uCbKgynyI0r-B8ojDnwiNQDbsMifDAjPCsQ1L_xHIl0R-Hzj1qYfNmlbaszftTDqKx0Qn04WbnQrg4McvU9pjDS3N-ZEjRAz6gS7Sm42vtrbrDcZIcqkHq6a_sBy6foyBr9RK8E9mvcPM_SdUguIJeizNHtoPePYYoGt_lgPI1DgqcS1EXAMjXJYqaLDpaUcaP7YehRyRvciWFoO2JuWi40AO7pz48Mh_uTcTxIiZ1917NK0hK-S5pzgIfITr9rby8CvwjkqdGDgXjrx2qZvNe5kgTkFRI1I3MWL2sBBNaIP-33vz2ygSw_B0OxgA1TaECBKooQTAl38jhZgtO_okloe45vBqj4a97eTFSvlV0jKfjLRsorKNrO4Gm0pmxrWV9oCQ9CzqS1_qRsZTwWHWrMfB1T2x7dfq7ZNV-UoEUG4hGvuo_LwPvquCK0jM077_c5pJ_ZOjAiMEONWExtyNVt7WvFVzs_kiaNilVVY2nmMS712DwzXEpaGxjG4qq5c4CbWM9tmz4=w1224-h918-no)

The end caps were turned from slices of the same material. The unimportant radius on the ends was formed by a series of angular cuts and finishing by file.
(https://lh3.googleusercontent.com/BaoizTgDVNMQDLkKnHhreUjbp_beP49us6456jzIxX51Jww6-J0nnXwrepwUzqnOcbSvMGMh6TpBsEGS6-G7lZQBdD-IrwLWsJu9TU9hGgNR1SENnEDfuoSLd4xtnNb6K3Z8xUDDb5vvtMQly_8hQ8HlsUSU2OZanhgfogdDCoAyBV7Y9k4QOGujsnaTSByMSBNbLpJ3-7SadOjVtcMrpYqOTQnZDK8YlCfusOQ0ygwV5fJAHxY3WNqEF0ytg6ZXkG6Ny3GP5x2e6Z-6OKl6ZWm6NusGK0V1Znr5MlkxnJWJrbOXrh5x4MruttqdhmFqv95nHtOwywpL47AChxEiVvDzy_9PDZHxLryCkGrv8cPtQa8zQpnpIBNUIFPXmE9SOLXENqiZ7O5-c9U62uii8R9BEv-fI4x28M5M2z1VBH7B8ggteJXio7maRLIhccNsQB7goXCQyIyOz-x-J6bqLq_MmpfKRaQdIJlbGYa9IcgwMJxZ95N1DMl5vxi5GZCAL6XmV4ra_nETbHVthGzFOlAhwRhgLqCTDv1rvYdzCVkg12XRpYSULmcLZNZTINrzjobuV6UNzvgRpAoqwPqv3PEp0M-_ZikdrbzdkGyq=w1224-h918-no)

The ends have bores set eccentrically so first off was to machine a fixture plate the same as that used for doing the eccentrics. The slot on the left side is only a few mm deep to receive a locating peg screwed into the end cap
(https://lh3.googleusercontent.com/PF-tKcqL7rkQtP_8FYqv1hPNqkWpELXZKgPqvQ7u5pY1gXFh0aLYJ_hf7xTHjcCgHG1itn_caRQec7JyrSJYIL5ouniUs149O86QBniOzP_OGUxcO-O2F9O6NFLcfTTUw1UJ2LCRjgDWK07Dx91BTynnLoDecWBYEXU326X4ti-6k2lNm-I_AJRxgEuCIcfuswdw8jjrQC8qJgPwHkXo72MHxcidTHXDIzRHDtxRpRdU-KHAqL5Au4889Dv6EAIbCPULQTWbSkR-i-k9FW1WPX4bO7OBDaVuC_Hbx2YPKW2q8tOrWlUDImIcdF1CiltTMSaXpswP8gBdjaPYbwVAqyPuYXto7J3Mq15Thex1z8IBnboLiox6Evoa6uxzqO5E46f5JhV8tZ6zjTof4XwmoNHVbLamyIeep-SWIZTrkQ_yekS8rbnVTIvuw59Y3R3tAm-MEnGefhnOLYmyIxcHBquOBUDuXRI09W2VGSt_xR9zEKPpW0EdQ6o2jst_jxJi3QPPNKE7zFkwxO1hfKRDEvpwdzlL42aCsvIXdIr6sfnbOhiRm_stYdR93YdCaA-2CSL7vmNKMJ6eOgSquhXFKEr4jsO3lJc1Kpgu8CSJ=w1224-h918-no)

Offset the required 2.4mm the bores were turned to depth and size less .5mm. The front register is for an insert to be JB Welded into place later.
(https://lh3.googleusercontent.com/T6VDGgMFb4IcP-U1X9_0aYi_rPbtDhIhPUMzUMrRVVuMs0wkjd1c6PWPUw53ogPuNUMxwFnWEqDQGKh_pUCUP6ognnYkc8joPVkL-f_gVmOSS3vKHIsLrsEiAswzIFdvyIelFkpyAkDG1-2tLmUHKrktG2a-vH8zUisn-3MFN5mb6YUF9nNytaz14yqtTDT7Nb_rw4I83le86HRHyIjXvFtvY4_IEAzgvXx5Ru6iMXRnye5UVhbo-Y5sLx-3ExxlOb49Z-0bTvuMe5jcbE_jcbw8bWAR63oRTbeTKoFcAHfghc23rKCMHX6qI6MAiWuopsGNv_E0DQGeAhaMPrF-Y71oe2OxyXD72uzJMEAIyJh5fLeC2WPZBzZNMRuQmSchGa05tOz5BiTFfy3eoFnkfny1CM2Gxb61by8ENWFUMADsZg4w8nt50VpjAt_8p5cYnNGVtphDwvJYUT4bRm1tnwrZKDAgk3rZjWhEg-aq0UqakpPX6Fs7SKj_ZBKJOGcQjljmHPvFp7MMI9Yrd70STZzDwDQMJQhCe5SpseMGQJPNVRwBgFsxfNcGdn8ZT-neTyr-NR3QENjwxeAnlkh5aYIBbILg0Od4eX6OnZVA=w1224-h918-no)

Ready to 'weld' up
(https://lh3.googleusercontent.com/5AuWRUvV-csTjkLjk_NWoh-ZUn_1-2QNXGXIhMPkZaQ6wL1G6miCoVgSd5SYNZmllmJkQ6NFhTC7gqCmy8Kxjwf06WVxEOy_jbUrO2DvHFLxshkQnDKVhI_yAxT7FlKMKXk-EPT58wawWxQ_mLPVXAfyxjEXxhU0wtXwW8QX2eiJR0umB3kkiKkVbAYF_TN89-a4Uxj8mKsdEzzIpFaEV_qwkrn06EeU9elDnhjyr8qo8-moHDSIKUa2weh11Lq1pmK-tdiTbd1ofxJ5us-t2ytnEQCJD5nGal1udpN-CS2ccTXJiUZk6CrrAbGw0tW2_NJBicplCMQdpDOnpqkG2Z8K6u5GbkddyRLHVIkCjZpvgcFGBwXMhUY_8m9KsPjkDeBjZ2tNC_x9ETpF_9IVR8H2vihpFwhRb9Q_7O_Spc6fcUYW4KGY-DwzXhi1K-rwBbzpuSxKrhXtTplAvSvVvZGkF3BnePa6NY4j9AVRf_ZFVHCPayUdiUlNdxH-_5lMlFM65hCLhKGhwMjkNRCYW-o_nW_HnnL50bEepgRSfzxHvPjYNqQG1oivFI9WxpMOnohGTLG-dcrxn8twUumMUb15Ws4_Z2lnOVeqHskg=w1224-h918-no)

With the insert JBW'd into place the parts were set back up for facing and finish turning the bores to size and depth as well as drilling and tapping of the 8BA bolt holes.
(https://lh3.googleusercontent.com/3KxCLw3Q-2Qv9VZAtVXoU0LB-SeARETXzfkxc5WkXzwJufn1nMY6FKx6-WZMM0LPG-wljT1FnEzqaXVEa-dn3h2MbnpknT_RvVGCNJx_IpDZ1wyujTvUqteXxFGpQq4Aw2x0jNaOXPw8TSIkJ2EkGJx0REotQQg581HN_b6MkYItP7orlvj7TZ4y-0rt5FLmqNCESfdXFN22lYnagx5KctLQl616EycHRNEzidVqrNBtvWQgVwRzXy87bOcm3scCUm92rfTHK5do3dIs_WBId9_I08-M295zuXRQ_YH3PbaW8s72f4u-s6ahiff5dGd4A_6fM_uc-K-Bpx1GeyxVzzDrEJbMJxsGnsNFdlCgEJa4nJTWmqxJHtgs2w3El2XcSiPSVlvVArZ9EyviDltrB8wyKvL2AgKs6YgNeYSbFl8_E8APfUJHMSVBWVkMtQtxIzIYTns0XwN-u8nfaynXeQeQYiUhp73VZLrcdkecae4juq71rwkPvz4Y0vGXMs1XePqXn4sGN_-yDxozxoPmu774x3RFlUBeCAiIJRi8y927M1z8Lg2HDgL1eU7TKz4x3U5iv8zsSusZsO83Xyt4U3gs0BRDzlJCyc5yFkBh=w1224-h918-no)

The caps were held in place with the original screws and two new tapped holes put in which will eventually hold the feet in place. Held by screws in these holes the original screw holes were machined away as the transfer passage from the end cavity to the sump was milled in.
(https://lh3.googleusercontent.com/eQ7wVQLJkrp4ZRenJ2wHWDNA8EOmjao8Mq8waTpCBd5JwXn0EaWytKd5SpcoarAYPh5K0LA9KfaZPvvvu_UySspxdzGz9gYEQU7bpN3rbXFsNszIvRfwJC3Suu8WEOlwQ9GGwmXgwKHZKQR4WLJxBUIX55SVNYxpTUfH4loi2ZjxrJq814yO9lzxxNExhVDf9hydRnmkPJu5gCjAMC5RZHBsjah4s3JzJjPd0O4fBm1g7CBY2Z1EbcmC-jRoTrQD1j7KwaP3hTr8z_LieaLq6YwfgV7RRJoriTDA82A-tTStdalt31pk57BsBEDmTj7ZLwkXdCvWNR2sDrq37QNgdsjqiSxr_DzVf8_H5ANfjTfAizTfPvUYsTQq1any7R2YftWqn7elk9Uom-tE5u67um4YmujdDSkEo2f6XjkIcpE8n3rHiCJ99tjoVbIR2RNnwT4ZFGuXRQzs29lLOqpDbYXC0ZGnW7ty7aJ11rY5a-Yjz_3aTER-8bNnP9Kf9bRy7e_PhFn2cRu_G0kwFC2B2FiA_CVfi_UfyFakQSolx8osJPVeLiKPMCh4aJzot2X_e8xZvo4-SuKKds9sALspIiPywyVEls0NECKBnI4J=w1224-h918-no)

And finally the parts as of this morning.
(https://lh3.googleusercontent.com/UBeyaBev7GmsXIDez0uiXON97uA15-DFOV0EBwYp7K0COub209CDN9jzMuWaEVlFitGEJEAcUmU94akXhm9LRCytsoHdQTQ4kTl6KRpUkenP7Mm5nTDv1KSn1SLx2OCs6paqx87HuSI7yUTTS7hOJ49juC0oscfh49p6N_6PYgXwwbUCxLivv74gQgrUMK0btHQL4iInnz6eJrFehnLO4awXCn7ho4c7Qlk-9T6MuU8gokUW1LV9KnY94FLDrtPu_vTD5d3ArXmWldDPAReTKQk9pdylADfeneol7doX51GamAx-XMFFqBm7Z-WVyVRhvfToM0xESgz6vZLAOkt1YkxzkPus_VfTIpegTjf3cUg-x8AuB3f9Pah__8g4BJkoKj2k9zhHfCKkbNNIgh1HhQLKTDcD2d2j1O9j4IIwnIzXsO1kkz4YZSK2fhpqFj9fzXlxhgO29k9a51U1EDIW6yhyUpQ0PKRqwOfurx41N435njieMH_ddG1HPTwtL-6y4Q4LtiRWMSn5OkRta4zPZ9Ie49mfOhtEGhTOshMKkEv8pcSJ6gX39XKeEc6RCCN4ZCoEBwRYCybA1SHeUZBxq_g0IuxD2Y3v6TgwmWSU=w1224-h918-no)


The lower face of the sump has been milled at an angle to allow any condensate/oil that may collect to drain into the outlet.
(https://lh3.googleusercontent.com/9SMLiwB_EGYw2mkzT_tIx2PhP7TcYBDBiSY6Bao-MyWEw1rRiW9rF8kYH-Qdrzm0XRgMroRSONLYjWQbQPLG6w5fWSHDASxTIFxFHW27MZYB8BkPSBsxMUibI-lmVUzM8ix66rC3hWvyFUFZvKpPgqJGtOvJd90wGXCqkADvpT9kNg7dZ_xsvoWx9BorwuLWbsp01OVBpArCsFaIM6LuSe6N7Yxzef0bTEFXQ0stXGQqb51X9rdiun3v42PaZD6I98IaRzlqht1D5G8fB1jBcB2C0lXz-uqG1FQl4GgnPxXw_IsChj0I3IrkNHBk1ixBpBfprsKLGI9YYJ4RKqBnu2M60zjbp7L6-sn7n88u310mES1bAKOsQXtsvOyR4OhfOTDvu96GvOw9aDTmpjTKJzRsy_22VpeQ_PW8XmabgeFHP4uElJjCGWFtEm8rSH6uQ09H2wepk_BVx2x6H_YJDh_CykxT0Xi7kfgOVgR0sGjbs6e4udSAC-Xrq5jBH10DCCkaEjqU10PToJSoidc6VRvu8QIRsmKUyrW3Y7vTRKz1np8FCnx-Gq-4GLnGgBuVSf83WVOYeBPH5x9gI8kXsatwkQq3Fe395yYUV1yT=w1224-h918-no)

Next up are the feet and the inner bronze bore - more on that as and when

Willy - if you are reading this have decided not to make the journey on Saturday - still don't feel up to it. Have a good day yourself though :ThumbsUp:


That's it for now then -

Have some good modelling this year - I'm certainly intending too ;)

From tha ol shid - 'Ole Tug'

Oh yes, perhaps I should add ... Having mastered the new skill of removing the lens cap (see Zee's thread on cameras ::)) all but the first two pics were taken on the new camera - a real little gem despite it's initial 'difficulty' ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on January 19, 2018, 12:14:14 PM
Looking great Tug!

And the Blu-tac trick has been filed away for future reference  ;D

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on January 19, 2018, 04:08:18 PM
Hi Tug, Sorry to hear this ... will tell Barry Fayne...
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 19, 2018, 06:05:37 PM
Thanks Willy but I have spoke with Barry and Roger - all's in order  ;)

'Dew you av a gud dey now'  :D

Simon that's an oldie shown to me long ago by a guy called Arthur Grey. Best guy I ever had the pleasure of working with and an exceptionally good turner. Long gone and sadly missed.

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 22, 2018, 10:43:09 PM
Hi guys,

A few more pics of the air pump progress - actually I suppose it should really be called the condenser as that's what it is - it just has an integral 'air' pump  :headscratch:

The feet were milled as a pair. The boring head, still set from doing the ends of the sump was used to mill a radius to match the body then the slot for the sump removed. Incidentally the feet came out of 16mm thick En1a so that new Banggood cutter was pressed into service to reduce it to 13mm. Worked very well at 1mm cuts and 1300 rpm leaving a good surface finish that cleaned up easily with a file.
(https://lh3.googleusercontent.com/J00G7HU8ERp9vej1svXGZFwlXDD8nod84iDLjpsFg0A56mp9tnGhatGYMDUSn0orwa_CtNiwTV_h_h-W9N5hR6p7otCoelY6Y2Xi71pHpEh0qqFCmxfliCLIAX0lgJ8vCLPpvi9MOpxWyUIU2YuaL4rpwqWwPKboJ7luH_N8-4yh5063IUmqCgwaAD8uxoYf5gH7Vkj8NwZl0-6YBKWohh4pwyxR5tV94xU2pS5KKSAD6aaIAVL8U0RLCGZv3V8JFAAPWkjfE6Mu7zm3n-A3h8B60urlW2YqAqnL6hwMm5YgJDWrgXz_pBWEK6EcPIi5HSE7aX1hvaDdTwsLSedRMzOHWLCTzGz3M6uydidLBvsJADsXuki0w5xvwECVR8S9jY821lgVkrcHmdHUtVytcQNd7v4VvQ2jFanUQWnZm9fEYGiSwCiEDkNiDK4vPbotoLp0TvtbPQyVSEvJ4bZyysl4Op86R-9b5qY4YjSFZWrzDM4NGpvcXThQbUS1H_QpNjtAW67JUcMHqZRejcPOPeR9ajuVg5T8N94slVmvvEWoBW81KyTcJJLu4NzvX8PYXmXSc5pUX-6xx6erWadiy9gpr3VFbA8CGwDhMhHe=w1224-h918-no)

Next was to machine the bronze bore - no problems here, lovely piece of cast gunmetal with plenty to come off. After taking a skim to establish roundness I drilled the holes first so that any burrs would be thrown into the holes and not into the bore.
(https://lh3.googleusercontent.com/HZE0eEnH5habuYaB8rrw8StfnzrWEpOaa33pSj8nBPJ-LHlEQ-V1egqDxe8s9cPQgJhsp1IZIF6btljfgCOljVvkXjnGLtwpXfUKlOn8wPLHTM0_JRZpO8PKq4bfOXbFB8lGFEWe6smmoegmIQ53TYwAA1IVOLtRP2v8_mP1KuzJJJxeYHRFIh80zUvJxnZiXEpCd8a0-oqBqaxIkgrHxv67aNEKkRCzNf2jMU15QljUXEcSI7UR-K7z9pCGQHQSryrukWyhKtcWGolFW5O_x5fwLeUtFP0zjzso-Sc_rUk5otPHvDIbDHjLna_cakGBCSCpvQ9neSRrxjMqdQw865-JXT6KU1FNayKNDZqdDFJdBYNpGG4IvQ4Js4hglQ0J62Bkp3QAehOgVdElGrIvv6yetYmbSTDsmphLO0GrSaP-DMEeTfZNrX0FNNhjFVxRHSaWlbzvCwldBBiAMGoeFNBCO6VwkWThOOP6zbisqxrQHv6MFkzlEWLoXVBy3r4M8NKenzo-4s1DThCLW8_cEwEpkac5NVX3NkmaLMjFQTSAkiniooQWUJfcbIKF5kFWYmumMS0Jconi0-ISnzaixaAi4cqxT81rrLkKmrBN=w1224-h918-no)

I still needed to debur the holes on the finished bore so made a small countersink that was Loctited to a 3mm caphead screw.
(https://lh3.googleusercontent.com/QaDDSl8y-noZjyQtJIP3Nfs0Abzm-Kg-yYVPvXZteeruVm1cq8Tt7HU1XAhdGU8Vm9zSNPWXzpBBYyuOZIZknYxubAtZaA_oBXDp12s_1axVjG1lvCXuv462X-nMhbEDW9Fs82zLuVnDNUC05xTHD-lw89kwAMIzcsJip1n9fLtXfqg2YtAHMqdrMg7n-1cAzbqeWKCu3esz_JBl2_gduoM0-RINjL6hUZ10L405MXcPQeN8tK0BCdzY8hyV1lMY_rgVHJeN2aa7Jo9obH0aO7Sew0Dxdg-iLM90bW6SPC11QySf7I2oiCEFrXNZhTlIUOkLzwI1_XZG2Wv5jiNps1DYDEBgNImeDzILjuxznq3wkCp_CoJIrjFKGe_GDt8sHRYQi7x4aPOVVuy8UUB0RvWdiD2HcKGQQfELHIt7j_kM6AisrBrIZ2TC0uzGvvGhOHryd9uoO6TmwxO_f5Jm6GweB6eKghV86R26G1zlWEcjfg0dNSmOxWEagj8x80OHXfiWiyNZidqipc3BlTQy0l2zunjUWNdCfp30tR4-L38B3I2KRxgl_CeK2JR_4jNFmC8eFyI56MxX3KgbH84hp_gqbLRzbCGDeC0uk367=w1224-h918-no)


Inserted using tweezers it could then gripped in a pin chuck to do it's stuff inside
(https://lh3.googleusercontent.com/j15Gc9msDuvHm6hkiY3sua_utKJE9LEoKP1taeZ2wzGdssbyt4_GepULgRPyyJAV8-mSU9TI-UbQrb5ICLLA97gAr0bnZWE-_5J73rED3psPbmQXarwmkvAYz7-_yVFzv9hlwXDsvmB4AUJdnC8U_W4K28fzCZFy-KL5zVqcLN3h6PPDK9YxoLmeG1O8sc7ZlHExac4WKQgfKQpnSW2sokKlpHRldKFNgzRvfNBzNeyQCzeTL82rAX_W0B1f3TjGENJPqyYTh0Y25W6Ho4TPFwtMyPJp8LG6NTt9E9NaqF-tBagwuW4g5EWGhh3UgAsQKaWXhdDK0XAKopChgVQCfa4dEkUU7Hb64XPeQJAAQDJAzhgxYZr-xHnEZvRTBpWdb-MW2gkjORi7PzpFDLYlaK6N0vtsHKHS4iiZ2MNJVdNzqXKs-to-Tv3uZWNjaxopECLyVWzg8aMVnmahTAROtt7980i3Ow-tKcI7FfL9bRpHFJfvUEcNVihovcfBZrFN8hweBoDSk4nKEZiwAa2-8HOhKqzioD6kT4UPDOAYBAGyXAq4Rjk70SO5ENuwv_XD76rAs1EJU830i6Nc6nEIg985CM4_5V6cTWlY56j6=w1224-h918-no)

The parts count ready for 'welding' up.....
(https://lh3.googleusercontent.com/oy_nB_C-OkbU_6kTBdHO8dRISt_ZagUFOHLvArG1nK7bHW8_o4tDuMh2Ghbf9fdC1yufUuRbq69RMufM_IsL_B1ZtQrJh65rDyj1SHfph7dlRlo37K_Ma8Eg7JWCi0cTXv0CPqM2EKwQYQtzgvo-8-Oz0KnCHEb8HYOQTaG6--xmeLBmoUSP-SaTlo2i4EQkGHoIhcFJPybktITTrAdof26_su7aM7-Z9uZZbTWM7AwY546A-FZeYmY2UtJ64lNhUu1XkRzFjqv4m1HvC0a6tvtnFta4ccQgea3Tu4otg6Ch8IkF-m225tjRMwa62rHkdWlKDZCCnzw1pfHlXZs6ac95QAhY0z_bl6ync4WZwIjpbwh2qLXGPJlHnlp83zHBZqEsVxZCUiAzz05P9A-DBZKE2wu5Eis1TlIC9r3-SOb6Zk7XJVNGRArfmLHBARHqLoliJi54ail6OReY-9ITGnDS4TzmfyqXfj4SLJw0n3pYN6GTGybRynCdXgEPuWQYXXYtOw0Ocu4Fo4NfeCHeaZIbgsln7IFliAjPq46GNEjWcLFvEhAIEi3X3Y4d-AIzMQt4l3XxjCkWrajlhus4-YQqKWzrUm7Igcy-fYTy=w1224-h918-no)

.... and, as of tonight the main structure is together.
(https://lh3.googleusercontent.com/4e5X4_LnKHhUgxz39HuYI3sf9znUV8nAkejXjsVo7tmlhJDktkgEU5pBlvcmY06ksPIP7WxU7LSjxw1Mi53C4mUMs7w1-YxHq0niZJZ1vl8PJF5LEc0lgfL9zku2MKZuuXIA_aXD753Mng9TLXivgzUId98wOB1QOMfgMvMNlU2uGZGk_fXjJoHn70X8cPgSS9FzQg-31vHoUizX0z2zeKzXfvPRWpuj0zrRSRGIFynNyi1A2KIVIFcBQpDpS4qdh7VG6TX95g8uUTL-IrbEzPIRkc8BO9Bb1jet_PhCbjeDA5RyO2fpR2_VnECZPdKknZ71RB3HsMzHslb09sH5bKAQVSw4xFKq8mq5YE5VJUWjqgWDT53gD4ogVlvpHVinjZLkigeeUyS9aEzhxL1-LKkW3o1yrlLxvl7E89nZKqyslRBmbLqAz_0S7a3KWQrBJJhGHQVQ0Q0cQxOS02S-OgZRl5WZjVQDc_A2dNWrGBwv-8zeXO81mB0310aP7jth3TcpI_cuubUlEnzLJCb823WxyXipcpuzZGo0-yb9Nnl06SyzBFNMgVt0ZrI7ZaRhwpodF6SfaRLURvbxsXKAOP6WBW6NYSr5rOiAh8iP=w1224-h918-no)

Well I hope that's of interest to someone - no ones saying much so I can only assume it might be.

Tomorrow should see those feet on and the internals done though if the weather is like it was today  then there'll be some time lost to the garden!

Oh yes - talking of garden - we finally ventured out there this afternoon to get to grip with the leaves. Look what Sue found close by the compost heap. Looks like the gales we had the other night did the trick  ;D Rather distressed it's now duly returned to owner
(https://lh3.googleusercontent.com/z9QUYe_2TviysG-Q8lit0WIuxGrZKFO1-ESVUe_rZdsWwOF8ngFixsu9okT90tachj_KRozu2NHggOm271jPjYobD_BrDBmhlReV0xAj52GnlNGF691HIYc2C7neXoyBTqaBWcX8hH6EC9eDTjqdXdI7b9wX5LuLtGOfvsgjpqADZfj58SgplnKT60s2aUzHG9zfArc3xaXOOElSLjQ3cZ8y-bhae8SdVrbIlFg9hbIWy_SG3yqKnKuJqeaWVwA-Nh6gSyHlYQ_KWGRNFRxeFOh5By2fFQDqJD8o4EbrO6t5u9Q3G76ndAW7LOgASkQbGN_iFpdem1oZnePCVQ4upiycNhTG2dKIgxdxEL2fJKAmYSH81ZOxOPQ9wfusho9FIyH-MSpNWUJayaLLwlFRAzXdmdfg-IR-Y4yTJ7edhp7ay3FESW_IkI1VDTC-QcnyznqWKGwizIKcwAvz6gYcRlRqBjgBKTM9fxJHyRakoDVO6f_QfhyZxL9HWdrSmfZepjbTan6XoiN5QnTRwDvuElyIPhMn9tZtApSwVflr5rZSwmZiod4d8ZvbvOaDS0wFofe0NPozJWS05eNH2YWGbpCR5mKuWhw-nbmHJCHg=w1224-h918-no)

That's it from tha ol shid tonight - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on January 22, 2018, 11:07:25 PM
Clever way to do the deburr.


As for the copter, should have filled some of the tubes with brass before returning it!   :LittleDevil:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on January 22, 2018, 11:37:28 PM
I've only not said much because I've gotten to the point that 'a' I often struggle to even know what's going on and 'b' I struggle to know what to say.
I read a lot. And enjoy everything from everybody.
I wish I could say/ask more.

Having said that...I'd like to know more about making that countersink and loctiting it to a caphead screw. How?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on January 23, 2018, 12:41:29 AM
Hi Ramon,
I'm still here and still following - the drawings make more sense when I've seen the metal! I've been distracted from metalworking by Father Christmas bringing me a 3D printer kit. This is now working but still providing many "learning opportunities" and things that can be improved.
DT
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on January 23, 2018, 07:48:14 AM
Hi Ramon,

I am another who always reads your posts.  Your projects are always a master class to people at my stage.  Can't have too much detail.  It is another of your wonderful projects.

Thank you for the effort you put into your posts.

MJM460
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 23, 2018, 10:33:57 AM
Morning guys - as always nice to hear from you.

Chris - a small trick but useful. Looking at your Steam Shovel thread though I'm sure you have more than one or two of those up your sleeve yourself  :ThumbsUp:

DT - Distractions - ah David, I'm good at those  ;D Yes I know only too well how easily that can happen but so far I've (mostly) kept on track on this one but that will no doubt change at some stage  ::)

MJM Thanks for your kind comments. I confess I do sometimes feel a tad despondent to think that no one has anything to say as I always try to post as if I'm talking to someone - perhaps that's not how it's received however. Whatever my only reason for posting is to be part of this community and share what small input I do within our hobby with others in the hope that it will be of interest and benefit to some. Comments such as yours then do make the effort (and it can be an effort at times) of posting all worth while. I see what fantastic input you have made in Talking Thermodynamics - I admit I have no academic nor technical knowledge as such to share on such threads but am always happy to make up for it by conveying what practical skills I have.

Zee - it's always good to see you've been looking in and to hear from you :ThumbsUp: - I'm always happy to respond to questions on anything - all it takes is the asking   ;)


The countersink was quite simple to make but unfortunately I don't have any images of it. However, a thousand words instead of a picture might suffice  :D....

It began as a piece of Silver Steel (Drill Rod) in the lathe which was drilled and tapped to match the screw thread (M3 in this case) deep enough to clear the finished length of the cutter.

The angle was then turned on and the  material transferred to the bench vise and held vertically. The teeth were then cut in by hand using a three square needle file, the depth and spacing done by eye.

Back on the lathe the end was parted off and reversed in the three jaw to be counter-bored for the cap head and the thread cleaned up.

Heat treated and quenched in oil but not tempered for maximum hardness it was cleaned of oil then the screw put in with Loctite 638.

I should point out that it isn't necessary to use a cap head - any cheesehead or countersunk screw would do the same but the cap head is of stronger material that the usual steel BA screw

Hope that conveys it well enough and proves of use to you

Now, I'm 'orf to tha ol shid' to fettle that air pump - er condenser and get to grips with the inner bits.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on January 23, 2018, 10:47:35 AM
Thanks! Well described.  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on January 23, 2018, 01:00:38 PM
Ramon

Dont think that just because nobody comments that we are not interested. That could not be farther from the truth as far as I am concerned.
Keep it coming. I am noting quite a few of your techniques that I will be using on Agnes.

Cheers
Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on January 23, 2018, 01:24:54 PM
That boring bar sticks out a lot further than I'd like, but seems it works.  Do the burrs result from the slight interrupted cut?  Even so, I'd think the piston would remove them after a few minutes of operation.

Will it actually pump air when finished?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: PJPickard on January 23, 2018, 01:42:49 PM
Tug,

Great work on a nice engine! One shot above shows a chuck on the Myford that has the ability to have soft jaws. I'd love to have this capability on my as well, who makes this chuck?

Thanks,
Paul
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on January 23, 2018, 04:15:15 PM
Yup, Ol' Cletus is still following along: no worries about that Tug. The "backside" deburring tool is neat. Wonder if you cut the flutes to work LH rotation if you couldn't just drill and tap the centre hole and thread it right down on the "cap screw arbor" and it would self tighten. Wouldn't need Loctite or JB :stir: 8).

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 23, 2018, 06:41:44 PM
Hi Phil, nice to hear from you. Yes, I do appreciate just how many look in but sometimes after a long post and little or no response the self doubt nags away  ::) Ever the worrier I guess  :-\

Kvom - yes it was on it's limits but was the only one I had that would reach all the way through. The boring tool holder is a George Thomas design and takes different diameters of bars. Very useful.
The concern over the burrs was based on how easy it is to distort gunmetal so my thinking was if I did the holes first any 'push' of the material would be into the hole rather than the other way and into the finished bore. The piston is brass and will have a PTFE seal so I want to be sure there's nothing that will cut into the seal in use. The term air pump is really a bit of a misnomer as it's primary function is to evacuate the condensate - a mixture of condensed steam and cooling water. It is intended that it will work in as much as it's all there - internal workings etc but as the engine will only run on air it's purpose is really only cosmetic. Your question raises one of my own regarding running which I'll come to a bit later.

Paul - That chuck is the first one I bought so is quite old. It was the Myford 'precision ground geared scroll with internal backplate' - I don't think it's available any more. However soft jaws certainly are - I Googled them and RDG sells them among others. A while back I bought a 5 inch SC 3 jaw and some soft jaws for it so I don't think you will have a problem getting some to suit your chuck.

Incidentally - The soft jaws on this chuck were bought about 1984 and have been in constant use since. They had been modified at one stage to take hexagon extensions but finally a few weeks back there simply was little left on them to use. I was about to ditch them and fit the spare set I have when the thought occurred to mill them down to a uniform width and mill a slot through them. New mild steel inserts were just JB Welded into place and left to cure. No reinforcing was fitted they're held just by the JBW and so far they are working just fine - a new lease of life. Been using them this afternoon to turn the end covers from CI.
(https://lh3.googleusercontent.com/vUsX4veYm8JzncJq3mHUr65YVtGJaP7ZD2XRhytVRinejGEMRPnSE3EfT_mYa7lmbsg_ByRlzKwdDukf5sV_oX5QBRvf9lLRtRPPn-kMCRVMiouMmSCQ48Hh-N64oP9TAHMiK1_FDBF5khH-WSdGZMv8HEzT9pznFenn7G03D_U4fBMwf_xSYt9b92bLx0fIy2ZXHPZWIev-YIGj5QZyq04iioI4da6UNnjMGgwhQLbpYB_JQTuQ5NbeF3m9Bq_bD69_fleGIV476_-gAHofhdaT9MMoDvLBvGIj3l7bEMllABcc4E3qvCQhBQe3HkWSJDb7Huk-IF3Bi9mV-AUu1JGfWUTC9SqPDR-expj9KHyImZjRPuiS4KyoEpFZdn-7j7-t4KnZKzkzehp3HDrA2IiND7H0y-Qck0O8RW6YVXCe6McUxV1XhPDAZKJDbH-K65xVyw36LdjH9v_dju8tg0UvJzaG8nQ3M8gHpUnixOD0XZ96nyzi1vT36KupMnwvpxODqjUSnf48zfJiUEtrVOibqYLVdpg-YZ_vm14TpC-S1tXuU6hpqpAJMz6mwwQhwGvLF27D7r5OZTQNcrEG_q9WJiNZHQhqrnz35JVd=w1224-h918-no)

Glad you are still here Whiskey - take it you and your force are all back on even ground now?
Like your lateral thing on the c'sink -  yep that should work just fine  ::)

Had a little bit of a set back today - nothing serious but despite pressing the two end covers into place to extrude any surplus JBW and putting a clamp on them whilst curing one end has sprung back a tad (or there may have been something picked up without noticing it) to leave the cover face at a slight angle. (That's the problem of doing things at a late stage in the day  :()  If it had been the far end it could have just been excepted but no it's the gland end so will have a direct effect on the piston rod. Hopefully, it will skim true - we'll see.

That's it for now guys - thanks for looking in

'Ole Tug'
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on January 23, 2018, 09:27:31 PM
looks like more good progress being made there Tug, keep up the good work :)

P.S. i thought that copter might have come down in last weeks wind. . either that or the tree!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on January 23, 2018, 09:38:39 PM
Tug,

Are you sure about that chuck jaw mod?  I know you have immense faith in JB weld but isn't there quite a high risk of failure and then personal injury if one flies off at high rpm?

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: PJPickard on January 24, 2018, 12:25:12 AM
Thanks for the info on the chuck. I think soft jaws are a must really and always miss them on the Myford!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 24, 2018, 08:11:17 AM
Hi Bertie - yes it was a bit windy to say the least. I was up early and in the workshop that morning - there were some fair old thumps as the tree that hovers over it was shedding its 'bits'.

Hi Simon - A good point to raise.  I do share your concern and of course gave the safety aspect serious thought. I was going to put a cross pin through to prevent such a thing happening. Once cured though I really didn't think that was necessary and considered that if it was going to fail that that would be when the jaws are tightened - I am confident in the product and really don't think that it will give way in use. That said, accidents happen when least expected so should anyone want to reclaim soft jaws in the same way they perhaps should consider your view and at least put a pin through sideways to prevent such a situation occurring - maybe I should do just that after all   :ThumbsUp:

Good luck in tracking some jaws down Paul

Now it's time for some brekky and a look at that problem

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on January 24, 2018, 09:31:30 AM
Tug
would not a fitted hex head shouldered bolt/setscrew be better just my 2 pence

great work by the way


for information to others
I have the big bore Myford both my chuck are Bison brand the tree jaw is 160 mm dia. and soft jaws are available . both where obtained from Rotagrip not the cheapest place , note I am only satisfied customer

the lathe came with a four jaw bison from Myford Chillwel my choice when purchased from new

Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 24, 2018, 01:40:51 PM
Hi Stuart

When I finally thought these jaws had got passed their usefulness my first thought was to use a cap head from the back pulling the insert into the groove. I then dismissed this on two counts - one, the 'soft jaws' would then have a hard point in them and two, that it would mean counter boring the teeth (not a big issue I agree but if it did not have to be done so much the better). To come in from the front has the head to deal with and, given that the jaws had previously been drilled and tapped for the hexagon extensions the holes were always getting turned away or spoiling the new register. I reasoned that if this worked this may be a way of getting over those issues.

I don't know how good this reclaim will be but I've used JBW for a long time now and it's strength and tenaciousness to adhere never fails to impress. That said I do agree that Simon has a point and a pin insert across the jaw would be a safety measure.

I guess you could call this a test piece - if you don't try you don't find out - so it will be interesting to see how it performs over time. I would add that my use of soft jaws is predominantly for second ops and as such it comes under little stress - that does not mean that others will be the same of course so 'safety first' should be borne in mind.

Thanks for your comment - I hope all goes well for you in coming weeks  :ThumbsUp:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on January 24, 2018, 05:19:14 PM
Thanks Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 24, 2018, 09:25:08 PM
Hi guys just a quick update -

The JB fettled up ok so it was ready for the next stage
(https://lh3.googleusercontent.com/HPeuT0NPEfFBcbSsulNtJ596j8qFc38kPBinBNASrtj9UJChy66TxoaIYe1vh5mJByi4UDlvFdM7gNKAOVAbY5c_djFa-xkWgAg9PbU1eFq1DtYC8moiSxRetNMT2sejR32Jj6x1oh-uM72y5V1uCMlSRTM9EEFuV0iYhiTGKjOxGXfpaKOyo_uBNV_zvVyhYxBixywdpFVVq6JbM6-7zvtAuTtvkzZ1xGSWvUod7rmtYjYk_jTlFZ-uiE5CTVzZpTyTzYj8Fs5fiYvaUOsB4Vzb6Szsxu4udVu_P8basDDpIW1cb9UAxcV4MnICSr37xN53FUGpXdVRxaTZliXhCdJ_hy49l3jraWX_GKO_FTwMyBwIjT2Y4PTtWcEXcPY672eYhaz-4iWay6iUjEx8XXe3JB2zdwA3Zd_DZoq-NMOKpbeD-5PZqsobwtekhAnZOBq69iBhxT7Xra-Fy8midv7UKvtXQpPTC76fuSBI97jEQaK0T63aX6j8KRJC4j_gk80AU3hNVPu_st6MTAOwe3un6EhiiR_iXzp8pHLHYrAvoKoadfnovAs6sw-KDUGOBnXm4s6MPUwOte87B5n0V5m_lEriSXvqqtXV1jY7=w1159-h869-no)

Got all the internals  save the piston finished today and bolted in the delivery plate into that angled end.

This was the result at the other end  :o About 2 mm off centre  :o  :o I think it fair to say I was a bit miffed about this  :facepalm:
(https://lh3.googleusercontent.com/Dp3eeOdxcUHGqGKSRLoMGpt2i1ngPZv20-fXi5BdLuSpIwxUSXo0U1B2vZN2Gd1iL2WbY4MnTxG_yk0CQ9XwJ599iR5_YTtrCF_gMiqjZHNlIAsa_cxvYYY8uhK4VmHvqyC3CjV9zY5Fc6dJBnfx1Zj6wrVEKMjs7Rv3LnYDtiSV3vGG8P-kZ5Gh3JWYMWZMtrvGc-vxWTdaNH_hWoTCQYcoGo1LiRHg34tZE2I-atCD4jU8bqPyxmY_RnkZ8BE2L1aHEluCqwDmxk0NBt-0hVwl_Sw0453eftg2qp0lYeWTZvF6yF70K_tcsscDqk9npfYd8w7u0nUQhKPy__wK_hutRhMd3unKabFUckysxNEPRZ6tbzxFjNHOI1dOMDGQcIfHQdP6BtO3Udqn03r50b48f47onwGtagS0KKObnGDNcFe92cK8D-EZEhVvcYOcMmuUsicKp1VCLLRiphOUGmPUsmLwtKEbt5r2-BDUxHp92-NaMe94IAIeXGCT_zhTtujG4Npjl-maQTTlvzuFgS8BTYi9X2XqMAn076PtUPy0Uy-dkNB7_V-3W06Xuap-x-hIZQ4qLJYQlC4qCU01UWUHU8w8zsknZsuN2jsG=w1224-h918-no)

Whatever - a new expanding mandrel was turned to fit the liner that had been Loctited in place earlier....
(https://lh3.googleusercontent.com/LLdQJH7uQTofHkA-JsK7VVEsQ_5I8s685R-FXFBbwtGmmV3dCMK8EPvHlJNZ5fSJPKAaKGrFYeCm8JJEQeNhiFEMp_0ZsiRCYuzus71nbJuBT1fwngw_sGKhkGJ8u6cLv2J_JOSxY7vPKdYl4GwPy57x75W9zaoD1AXpAnfxtqaWWtVZkRZGmpIaEgA2Nl8DG_RoBY4S1cUe1IuvfsBKoOTpmsekpI-TXSwCb3C-BIR7M7RAGa3GDmq6XGfPtAv0Sz9doM0EUS7wJVYxE1ZGykRNUUNOm5g8nnhKWEgifyOtjQkgC0lmmgkjtSVUgL7qMkpnscKTUO7fLYIiiPi0PqlJ5J3fGaWAaKU6X3mCvpQZFlek2kLFuTXNVpWqIYCWErwfw0rfVJSVIrdzDKkcxEleD7QPyJwfzjRaMjBlBnjxL1w0PzaYRp99ENayZKWxVk_PkCz_b7GQzXey7QjPTeiGJMQuuSX-tnOPg7nY2z1DH3uKzy375YtnUcEnAPi1bEDeDzhOr1zdsEuD-0-1uxXdo9yVAVrWK697RQan6n4Q1ecXoWy30k1dP0AL0TKT-NMFRrw0rJtGwsHNBYRYWv1l-gI6O2sXAGVIrIik=w1159-h869-no)

.....and, despite a weighty over hang, it all went smoothly. Taking very fine cuts both the outer and inner delivery plate faces were brought square to the bore.
(https://lh3.googleusercontent.com/ngUJ7oCcbIkIc3uGzR1UvfXwK8ppADYzvW97VAeOzvRnovY-zI1KP9kgIFeBlbxIdo2BwRcp5TUzdr5CcQhu4klNW2aufCyMwhtEkwEWdIfWWhzJUNwx8N_bAeCT-8HPYRhjpQV_IFzVNikTRXuq9zlhp8gpZNuXEzDfGo1-R6nLR2roRPJzBuM2awjEMM3bYA2mUP3tkRbKmxLaBP5qoB7l0hmQWj1NTqnF8ReafwJQvSfzgH6h9CI2hfWTogok8ZeGYwyi98wNTb161IgmB3kBAXUfHZl7WCly_mhbc2j_XfUv7zwDqshXr5foAXnN4mwoTIOxWyKMWeQk2sSClY2skHCaq7PRYdDQ96jE7h9sKNF6SWWVRkRaBW9Sw0Kkytavj6ygYbJaRm6I27J5knDAbqm1--NXJ-eOc6S3fG3nFQVUvK8fKnIb8oYbWXHTDKoyPG0r1Wamh6USpZ4WeE8KFCP_VzXhwQ04BU5qsmCL63xh0Rp8zeqHDS6-8Yj-UL_B7PFnlbEJOAxI7ZOp9im_xYCUoErrk2VP4sKQxW2minqvusMJBKCYvjgHvCbL48sl5GkOkh-t83o58OSpXMvsyqrDEyG-RyN5voZR=w1159-h869-no)

The end cover had the gland fitted and then had the register to fit the body and the piston rod hole done at the same setting to ensure concentricity. No more pics I'm afraid but It did all bolt up well and the rod slides easily through all three parts. BTW that distortion on the side inlet flange is definitely the camera!
(https://lh3.googleusercontent.com/88n0PQMo8Tl0QAHFvgq8M7m1GtpOb7TdyCKoOFL-XiP54VZjEF52Xun4EKrWXovsfT02WIxnxHxihxUjPhj_js_FtpK-juxS72abJ7qpaUg79eA9_eQAWeZ1oVv03FHNPrc8sNIN4seQKlrTadfxl1Bk9iJxMKhFHs5F_SGab4VIfXoOIJ9UIdE6MjN-d9txiiL5bTMgGlsSjWpO-Kj_SyNazXePvWgTdzrYUKKJ-Kdnp_EYrAQTkedAuppJQ-HkK2le0RY4l18epOw6f47j571kW4yd-QkV2yj8FKbT-BpQorFA5mMC3cy6utlU6F_DDkwripsPyQTl-EP_nMMaRUKHiph3MIJcc3BPnwouUUQuyYxSrLwVw4yP7RRaHvsll7zz0qZ1USOeZtuF3388V1yR6czG3BuVZPMUrk_DVFtqzLYekw2tZyCfQxunnCHkk0ciLkvF4qrAUok_E9ij-Ij-A09L4e8zgvbWGN5IrhOuAyPPmb5aduuucZK0ecBP45S_cNVsD5tlfkJGhnJUILXdlsPfuuqkOWjDdiPz_IROkad7yBF4l9jIGUrsON1OkbAzyzuKxZMysl4LptSd0m6EA0U8Z9Ze_wTfaT_e=w1159-h869-no)

The 'legs' were JB'd into place tonight and hopefully the piston will be in by Friday - I have to establish the exact length of the tail rod first but can only do that once the condenser/air pump is bolted in place.

That's it - time for an early night I think

Thanks for looking in - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on January 24, 2018, 10:03:28 PM
glad you were able to recover the part
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on January 24, 2018, 11:35:27 PM
That looks great Tug!
Much better than the casting would have, looking forward to seeing the completed pump.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on January 25, 2018, 05:49:25 AM
Hi Tug,
 Following along not saying much, & enjoying the ride, but have a basic question.....do you need to allow for the JB in machining? I guess that you don’t just rely on a filet to hold thing together?

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 25, 2018, 01:11:16 PM
So was I Bertie  ::)  You could say a just a tad relieved  ;D

Won't be long Dave - getting close now. Thanks for looking in.

Kerrin - that's a very good question as I confess I haven't really considered that this method may seem unusual to some. I will post something on (my use of) JBW tomorrow. Today I have little time as I'm out early tonight and want to get back in the shed this afternoon.

Back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 26, 2018, 10:07:21 AM
Morning Guys -

Just need to machine the feet and fettle the last bit of JB weld this morning then make the piston and I can get it fitted to the base :)

JB Weld.....
As said before Simon (Sco) jokes that I have shares in the company as I often refer to it. It is a product I have used for quite along time and have become very familiar and relaxed about it's properties. I do have a high degree of faith in it but as usual with myself that is based purely on using it and witnessing it's properties in the manner I have used it. As I've said before I'm not academically nor particularly technical minded - I see no need to know specifically why something works but I do need to know that it does - or doesn't.

I began using JB Weld long before I first advocated its use on a model engineering project to replicate castings (This was on the Waller build over on HMEM http://www.homemodelenginemachinist.com/showthread.php?t=15630 (http://www.homemodelenginemachinist.com/showthread.php?t=15630))

It's use for me began when I was flying control line aerobatic model aircraft. In the interests of lightness and appearance I began to make my own silencers. At first these had 5 parts to them held together with a long screw through the centre. They looked ok, performed well but unfortunately would vibrate apart in flight at times. A costly exercise as not only were some of the parts lost in the grass but worse the flight score was lost to due to a 'jettison'. One of my fellow competitors suggested I use 'JBW' to fix it firmly as it 'will take the heat' well. I had not heard of JB before this time and my immediate thought was this was unlikely to work either as a glow motor exhaust gets very hot and if a lean run occurs very hot indeed -- but nothing ventured nothing gained

Now this was in the days before instant access to such things via Ebay was available and I have no idea where my first tubes came from but source some I did and assembled another silencer with it. End of problem! In fact I wondered if it would hold together without the long MS screw - no problem with that either so that was more weight saved and the real final reassurance came on one particular flight at a Slip End competition.

The model fitted with a relatively new Stalker 40 stunt motor went 'lean' and I do mean lean. The plane was unflyable in other than level flight, the lines bar tight and the engine pulling it around like a team racer. All I could do was fly the tank out and wait for the engine to cut thinking all the time that my embarrassment would be added to when the silencer parted company due to the heat. To my complete surprise the JB had held perfectly and had not degraded. It confirmed to me that not only did it live up to its properties of working at high temp but its ability to keep it's grip too.

Since then I have used it in varying ways mainly to replicate castings but I should stress that this is mainly on models that are unlikely to have to work hard - just sit there ticking over on display - so as such I have complete faith in it's strength for the task in hand. It was used to build the cylinder block for the Wide a Wake launch and stood up to the heat involved there at 60 psi of steam without any issues either but as on the Waller I did thread the inlet and exhaust flange and use the JB more as a sealer and a fillet. The steam chests had small screws in but mainly for holding it in position than for reinforcement.

The condenser/air pump flanges are not screwed in but just bonded in place in deep shouldered recesses with a substantial fillet on the outside. The JB gets pushed forwards to the inside as well and that forms internal fillets too. Likewise the end covers though there is a screw that holds the feet on that goes into the end cover but that was to ensure radial location when fitted. This part of the engine will see little if any pressure. I'm hoping that the engine will work at a low inlet pressure any way so by the time it arrives at the pump there will be virtually no stress but I'm 100% confident that the unit would be capable of taking a very high pressure indeed before anything failed

So Kerrin - I hope that's given you and others some idea of my use of JB over the years and the confidence derived from that experience with it. If I had any doubt I would back it up with either pinning or threading but on this specific build I really don't feel that's necessary.

The product is readily available these days on Ebay where a variety of prices can be found. I should add that there are several types available.  All my use has been with the standard type which has a tensile strength of 3960 psi and an ability to work in temps up to 550 F. The fast set version does not meet those parameters. I believe there is now a 'high heat version' but have no idea of it's properties.

Well it's time I got my backside in tha old shid  :D

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on January 26, 2018, 11:58:00 AM
Tug,

Always wanted to have a go at control line flying but never knew where to 'start'.

On the JB Weld front I know I'm begining to sound like a doubting Thomas but that tensile strength is likely to be misleading - what I suspect they are quoting is if you 'cast' a bar of epoxy and then pulled it to breaking point the apparent strength would be 3960psi (27N/mm2).  The actual tensile bond strength is likely to be much lower than that - glue bonds in general tend to be bad in tension (peel) so you should always try to design the joint to load the glue in shear.  Going back to your chuck jaws the bond is primarily in shear so good on that front with only tension developed in the bond if you clamp something at the very tip of the jaws.

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 26, 2018, 01:18:14 PM
Always wanted to have a go at control line flying but never knew where to 'start'.

Oh that's easy Simon - in the middle  :D.

I was a devoted but off and on C/L flyer from the age of 13 until 2006 when it just petered out. I always referred to it as my 'Achilles Heel' as once I had the bug all else would go by the wayside - one of the reasons I try to stay clear of it now  ;)

I hear your caution and highly regard the background from where it's coming but the proof is in the pudding - for me - and so far it's been pretty good eating. Doesn't mean it will always be so but as said if not tried then not known.

I caught a real good crab on milling the feet on the Condenser this morning  ::). Big - bloody great big - sinking feeling  >:(

Reset and re-milled I thought I'd removed too much but fortune was on my side -  I have just had to file them a tad and a quick lap on some wet and dry to get the piston moving freely in line with the cylinders - Phewwweeee!

More later - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 26, 2018, 07:02:57 PM
Having got over the drama of ripping it out of the vise this morning  :o (there were some very choice words indeed there were! ) - fortunately without any damage - and much to my surprise still leaving enough to machine off, the condenser is fundamentally finished.  :) It occurred sometime later that the area being machined which the cutter grabbed into was the lower pad face - only JB'd on to the feet last night with a face to face bond. At less than twelve hours cure it stood up to that violent action I'm pleased to say :)

Just thought you might like a sneak preview of it in situ though as yet it has to be bolted down.

Once I fitted the packing to the piston I did have to spend some time freeing things up - quite a few do ups and undos! Gradually solved by deepening the groove in the piston to get just the right fit on the PTFE packing and easing off very slightly the register to bore fits on the delivery plate. A light honing of the bore was necessary too. I used one of those three stone brake cylinder hones which worked quite well on the soft gunmetal.

That sort of problem solving just seems to eat up the time however and the day has been a tiring but worthwhile one.

The rod moves freely but with a degree of drag - to be expected with the new packing but I'm expecting that to bed in within a short time
(https://lh3.googleusercontent.com/kxieh28PdUVICJwGklcOJeQJcwQgqAdPO6pdsuuDl4SCe5Rg31fqUHUNSjR3Gc_DffIULEf1ERGPK7w57Ae2jN6iurv9aqTnNTzRIUIiTve-uJs93mB4x_LivkL9YPQN1sMqmzhNi_OeTAe_rGXbKk__VnzC7wZjBwBG_VL7l978Yz8JQKx_dkIuE9xwmTVgkrHpzXPHb_TTInmLm2H1iYohiRSjKc0PK1YuiugxH3_tvEGMIqlEZLdB2_LS_efbu_uk5vBUqqEtSb5pMsMEgr22aOwgltBBF900ICb3hVENWtPwMybTogN2CBkJ3kTYEjrneF5ezYDTgN_FdLwEybm0STdtRU7qOKRmyG9t_EOUJhtP2JBbJ_gP9zYbVPCwdu5cs0SofkKTmrVJRme7EuxS4694XjZoAsZzvC61Ic8qzKMwb9FfTCD_Dwn5hYD7NYWZo0MN-JiSeUG9RSSILAUT00NkJ0foMka3iOiP73oM2NqdKnMquasSy8fYHiJx2Ml9zz94SnlaWneMkC-47c3c1Zftb4iThRckwHA_HpsbKDNBgK_on-pw1cAUTsAW7AyCF2vat0zaxPs7sKmay2lVdX0PxuapGi3LTQTU=w1224-h918-no)

A closer look - it will get bead blasted at some stage before priming and painting and that gland will need shaping but it's just making sure I get the bolts in the right place that's left to do
(https://lh3.googleusercontent.com/e1oJUzHm5C7KRY505lOQVAmGL4fVPrgH7ZfSYH1zILprZAFeIeVFCazr-Zdn8Xbad1dQYpWD-wHQwZwclAuHosak81RYEFW0vhX1YERY3_ur38D5LqQKdMxr1zL1Gc64A3cYea9fvvNOdjlVYGhRPCTJwIF-EmoT58Gdf7QOf5xC2LYhsoXGeET4couhr4hOcSZQXD5AQdTFys9fVI3o7H5NeNIjsE6G2_ayJjzU4xmXqHXmEtAw018g4Q4Pe6_Av1x14qo_La85ruzRPWpnxOwrUEtaNUe_ulfUS9ZYTAwxWYdRLctQg_SAzVp9ryEruYsn9D2D4dx3PwVH710Dl75FSLWhs4Ho5vx8aMhFFct4V0tgMVACAlSoRJ11gDSkYvTsh-2TL1KH7IuoZL8s3ZHWW_qsAUBkEOYd01e-jL987UTG4RLL7dlI2UZZiMZIbVKrvtL4rzkw5Ng6vTpJUs8rkp5R2VKE8yUUIjaig7G3KV9oxbaIEq8fSbihTbAQRktKUiyc7BIa1uSgoE0gC2HowqeHunIH-btkE9GnstQb-h5nh7Q6qREQsAQCBI8iuJoeovwXQ0K-qnOVj9j1F4BNhcBL66ZsAK1wsk2j=w1224-h918-no)

I'm going to have a good clean up and take a break for a few days - I really do want to get it (the engine) all apart so I can begin painting it then I can get to grips with the conrod and crosshead.

Regards to all - Ol' Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on January 26, 2018, 07:46:21 PM
Turned out nice in the end Ramon, I've been quietly following along.

When you bead blast the parts do you have to watch that the JBWeld does not get abraded away before other parts or are the beads gentle enough for that not to be an issue?

J
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 26, 2018, 08:03:34 PM
Hi Jason - I really don't know as this will be the first time I've done it  :-\

As the media is glass bead I think it should be OK but I've got some well cured JB stuck to a piece of plate so I could try that first to see.

Nice to hear from you - I need to answer your last mail, I haven't forgotten just been preoccupied ;)

Regards - Ramon
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on January 26, 2018, 08:24:55 PM
Jason beat me to it regarding the JB being attacked by the bead blast, I would certainly do a test part first before you attack the condenser.

If the JB is rock hard it will tend to get abraded quicker, if it is slightly flexible the beads will bounce off it.

Nice job by the way.
Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 27, 2018, 08:36:59 AM
Thanks Phil - that's an interesting observation on the newly cured to well hardened JB.

To be honest I don't think it's that necessary, just thought it might give a nice uniform painting surface.  I'll definitely test this scrap I have but if there's any doubt will just use some high build primer.

Hope to get it bolted in place later today

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on January 27, 2018, 12:41:36 PM
Quite a lineup - tandem to the tandem.   :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on January 27, 2018, 02:08:18 PM
Hi,Tug, Looking good ..as always.......   
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 28, 2018, 09:05:21 PM
Hi Kv and Willy, thanks for looking in. Hope you had a good day at the ME show Willy.

Not much to report tonight but I can say I have the one job I was a little concerned about out of the way without a problem. That was getting those four bolt holes for the condenser drilled in the base in the right place - there would be little room for deviation to keep everything in line.

The holes couldn't be drilled directly through the feet as the body was wider than the hole spacing so I made a small 'dot' punch that fitted the hole nicely and did each hole one at a time - punching, pilot drill, drill for thread engagement and finally size drill for the stud. All done free hand with a pistol drill I kept the 'squareness' by milling a rebate in the corner of a piece of steel. That allowed the drill to be kept visually square in two planes. A little apprehensive drilling the last hole but the unit slid down over them okay and the piston rod coupled up in line - it all moves freely I'm pleased to say. I'm not satisfied with the packing I've used as it does seem rather 'sticky' compared to what I've used before. I found what look to be some very nice material on Ebay - not that far away in Glemsford in Suffolk actually - so will see what it's like in the flesh and report back on that later.

Well this is the stage so far .....
(https://lh3.googleusercontent.com/tQosISwW4cTMqB0Sa1RYM4YViGkfw0EKylavhPgl81Ibok9X5yJXxZr1v5MAyzLoMF81WCufjb1uRt6unZvLy34CtxfHiYflEr4DT60TCNbGlw3n6vW4YCYQu2-68MJOl5k4nY3KjAHT4rHp9p7pc2johmYhiMO3-7vi4fCs-t4ETzKRJjTL6-WjV_tQQyE8Tvk2kaVynNuW86g7HJh2U0Te7AGmln2tn6x_Chl0N-AwPc-n4t7jabPqlEw8OAWhHvCrjS_u_RsJpeIHt1B040cOuqMTx3ASDJAna3As5OLP_6U_U7YzbJat5NiTIaaYe2Uu1Fp5vRHDOnsRhaYTmoYb58Xp5TTpnCREU0ByDT0v2HferF-yVQ7sqNClCHMNBmbmyi_BDeQPqBRVS_S_BD6oopmZe4x3BTr99pG_okID0gWnOs7nV9nzJK3q5DYWr-hGziRIm_MhlEepQ6Pd1UswdEgRTUReywgHuK6uOqPtuqDGo5s2E8lCAipO6xE3ITXsdYkMPiNMatEQn6Zl_DYkEUId8Uj0LzY8QrGcoJl2SfIH5yvRTXY8nBRanO9uAPwreF2g9jlTLyrz-qbkuxCJXAAZ1xRCzqthPXKI=w1224-h918-no)

(https://lh3.googleusercontent.com/JkIvFzTM4P4t7VoTgryYrzCIt6S0VNLOWZDjm_xsP2PWcPpXvtOaC9jIPayYMrAvXMX_WVvHe5dHgWslm21Z-v_Ow7918O1q5aJ3t-MDuP7p3ayHfRua_LpRQz1TrWKVgOmAk04BYIclw2KtvfWF5jCuYAfHiVInpdMG5a_97QBs3YYbUk2lnF_X8YVatu3FCfbM3OtvklS-TglrYIxi2dwvkOUKuF2Q3RpKAh2BnsRK8md-3kKrC3r_W99Z0Cwh0reMAhcxGT0RsD9gClO-KfMN-bN8UPjeTJLVQ97nuqPGnjncbw5_mPUjjhdmiHP24yrm_H_wcqRSEEnzLDbmvgo5H0ZXmNe0O03YGuI-si1_R9KEUOGDfjJ3NuoHQZYVUbeKr5fCTuZYnrSqtiBjzYjrtCMyFgAvQyW90sW1LlG_IM1Cm5l64GKKyJuBGj64FEz3wXSIE_8dpC-tA-XY-4q33MUKERdWDOWZ46u7e77nnTyXYKbBEkc0S_cyJhTQqkCpVOY2ClXuJBH7XLWxvV05f4V3FItswCh6uClEeRfBePgfCtR62ziDLyCUcxxgLSrsZb-yiQXC_GUYbhfSxq2ebUygTKhTqV0_y6JL=w1224-h918-no)

I really do need to take it to bits now - it's gone far beyond what I intended before painting the base parts.

As said however I'm going to take a break for a while as I have other matters to attend too but will be back on it as as I can

So, hope that's been enjoyable for you - in the meantime

I'll be a soynin orf  frum tha old shid fa now  :D

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on January 28, 2018, 10:03:40 PM
looks like thats coming along very nicely, bet it will look fantastic once its all painted up and finished.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on January 29, 2018, 01:23:55 AM
Great progress Tug, the pump looks great in the family shot!
Looking forward to seeing more progress when you can return to the shed.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on January 29, 2018, 01:48:48 AM
Very impressive engine! The true size of now becomes apparent..

I'm very curious about that pump. I'd like to know more about its internals if there's a drawing or sketch available.

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on January 29, 2018, 08:04:30 AM
Sure is going to be an imposing model Tug, enjoy your 'break' :-)

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on January 29, 2018, 08:13:11 AM
Hi Tug,
 Many thanks for the JB Weld rundown, answers a lot of questions for many of us!
The word must of spread on how good it is, as it’s available here now! Found it quite by accident, the problem now is were... :headscratch: were did I see it... :old:!

Enjoy your break, we will just have to hang in there till you update!

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jakdaw43 on January 30, 2018, 04:17:48 PM
Hello Ramon,
A Corliss Mill engine has been on my 'bucket list' for some years now....had the castings about 10 years from a club sale.
Decided in mid November 2017 to start the project. 
What I had were two Corliss cylinders (HP & IP), bedplates to suit with the single width flywheel and the condenser castings.
I machined up the condenser, two GM blocks, crankshaft and flywheel as a starter for the project.
I then decided to add a S/V LP cylinder, which I will fabricate.
I made up the baseboard (preliminary) and got the engine basically placed so that I could fling the flywheel....runs nice and true !!
The same kind of 'pushticuff' feeling you get when the loco chassis is pushed up and down the bench for the first time !!  (You can see that I was heavily influenced by Ivor the Engine !!)
After 20 locos and three traction engines it's nice to do something different, returning, as I have done for many years, to stationary/marine engines.
Having just been put onto the Home Engine Maker site by Bob Potter, it's great to see like minded people around the globe enjoying our hobby....or is it an obsession !!
Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 31, 2018, 08:46:35 AM

Hi Bertie, Dave, Pete, Sco and Kerrin, Thanks for your comments. Thanks too ‘Jackdaw’ for looking in – unlike ‘Tug’ no prizes there for guessing how that nickname came about eh ;)

Pete (10k) -  Here’s a pic of the sectional view. It has valves each end fitted with O rings.
(https://lh3.googleusercontent.com/IJpeOs9QE_CjeUD9pdfBVsnDtbsaMie8prgWieoBRaGc5Hr3gCA4TWq3DUndrxwuLUEzwAcr6zjQUo41Ie9zibkFbNhTgN_MJEdXAuMwMGxzESSIAvjMdXqvWZYlvg1KgigV9zM52gUR0nLV-hJubnjOApX8spI3cn0sHd19zpkGxTrgODaZn3h6B0a3DJeq0Dirlr0WVYkohPfWFkS7Nq19Z4ZxBNTzItHFhvF82tewdAcIAw9Wcka092aQB8I3kPg5KgvlUvJRABltC8k2b5s5pXLU1DCtATDi572pjhBPPGl24nLU4wANWf2w-0FLZMe7nYoWbUIIIv6LVmzWq7VG1crpy6kV2VALN5Fs8RCwR2jMAAnR6zOl-sG8IRsrY3MSEKEveG6sfHrta2A8vSWQMQ6qh9Y2dSRmkZBE5MZ-GEYr_Gs42xW8tFWhJm4ewly4DI7BKLSGM_SJoSlMLASs7UA8CoMYti2zjGsYyLbNr-TS4qtCn60nPntpUV-wyihkGCAs6NIjoqrH9lxrY6mVmo4TLufppVfo7KyfzdWDl5S5Zs3lKWHdSuUqsrWcmYzc8o7xQ56O5zYshrLqnVPoP9zz93k_DGPVuRAC=w1224-h918-no)

In ‘proper use’ the LP exhaust comes in from the top, cooling water injection from the side. The ‘air pump’ then evacuates this condensate through either end into the end chambers then down into the sump from where it drains back into the cooling water reservoir. Obviously all redundant on air – I’m thinking of making a new piston without packing as it really isn’t necessary and as I’d like this to run on as little pressure as possible any reduction in friction is a bonus.

JB Weld (again) I looked into  getting a tech sheet but could only find safety data sheets (all eleven pages!) so the only ‘tech’ info I have is the two specs on the card – 3960psi tensile strength and 550F temp. When I looked here http://www.jb-weld.co.uk/j-b-weld-epoxy-adhesive/j-b-weld-original-epoxy-adhesive (http://www.jb-weld.co.uk/j-b-weld-epoxy-adhesive/j-b-weld-original-epoxy-adhesive) I was surprised to find the statement that this product could no longer be sold in the UK because the packaging did not meet European standards – momentary anxiety attack till Ebay was opened to find there was more available than you can shake a stick at. Duly ordered a couple of packs.

The backing card has changed slightly and I notice the strength is now given as 3900 but the temp remains the same. The card now has a small impressed triangle which I guess now makes it European Regs compliant.
(https://lh3.googleusercontent.com/QzoLfxHtXzBbkwRC9iCO515bhN-zPKOFUKJPJrWCYGEEEs9aywUACKo_S2pwOfNF87T5q4mmuL3KOuJdZ3TjSBDQA3N0o_UAZ7J3Nw_nnDqo2VOWRi_e8oQLXEKziOTgN8UqGUv9Ec3HKCxlCHGJi2RCCAJcRspAOBkZNihaUU8CJmXP53-zW_Hb-zC7316DjX2P_mukyt9NxvyCEOCFcxlK40I6xW-hDktapLfJIM6Ik_FuJT-XKZm3136_TLNB6tLfh6d810VvskuTWFO18Ezw4fiMg-1rkMeYRBzOTyH5czirlGufBVmiRUOIXIG1LZGgqomWnXf-Th7C-ZBE5g-7YsKBzTjHf5S0xhff91mo3Sa04tj0VyBODJ2obv2U9izCzt_WZZUQBdQmYkinCj-hZtFC2A7YtqMC2-w4tEosYvUGI_mLGdqoHYZSeIiqzVN0hY6iEZBCv9v3mX2dg8QBcEIggNIdidoorVMR7iOfQwv3ZRER-ss87wEgJs0qbXtiyI95nFjVqvuvrEpuGib2mWnLokArbD5Dx_no9vOU4lmW9rXPOh6U_60bsd1Sm2L5bzGHO7aaL7ZB1--h80YIguXzI53bqXF6XkSc=w1224-h918-no)

One fact I did notice in the new instructions is the recommendation to allow it to sit for an hour before using to prevent slumping. A problem experienced before on a couple of uses, some may recall. Makes sense so will try that in future.

The new card also includes a free matchstick, which, I assume is a mixing implement – wow. One thing I forgot to mention is that I believe the best results will be achieved if the two parts are thoroughly homogenised into a uniform dark grey and not just mixed by stirring into each other with something like a matchstick! Though it will still cure I believe the effective strength will be diminished. I base this on something a member of the Norwich MS once stated at a meeting – he had just been on a course at Cieby Geigy and relayed the fact that he had that stressed to him. I’ve always kept to that principle since on anything epoxy and always ensured a thorough mixing.

I note that the 'high heat' version is an epoxy putty - worth investigating I guess

Despite my intention to take a break – I have realised that before I can take it to bits I really need to sort out the pipe work so as to deal with anything under the base before it’s reassembled – so I will be getting back to it sooner than thought!

Stuart – ‘Jack’ - It looks like we approach things in a similar manner :) I look forward to hearing about the rest of you build  – with your background you should have no problems with the small challenges it throws up – one things for sure yours is going to be one heavy model but I guess you are used to that :D

Regards to all – Oyl be bek in tha ol shid suuna thun layta ;D

Ol Tug




Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on January 31, 2018, 10:46:18 AM
Hi Ramon,

I look forward to your return.  I am thoroughly enjoying reading your posts.  And it is a very interesting engine.  I am sure there are many others.

MJM460
Title: Re: Tug's Corliss Tandem Compound Project
Post by: 10KPete on January 31, 2018, 03:59:45 PM
Thanks for the picture, Tug. That explains it. A simple double acting pump but very clever arrangement with the valves at each end. Nice!

Pete
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on January 31, 2018, 04:13:00 PM
If it doesn't do anything you don't need any piston at all.   :shrug:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 31, 2018, 06:17:32 PM
Ha, your comment brings a wry smile 'kv'   ;D

It has been considered - at the outset the thought occurred as to whether to leave out the plumbing and just have this running on one cylinder either LP OR HP , leaving out the other piston and that in the airpump.
It was dismissed as quickly as thought - primarily as it wouldn't be a twin and airpump without a piston wouldn't be an airpump. A charlatan in other words.

So, piston it is - whether it's a plain one is up for grabs as I received that new packing today and it's far superior to what's already been used - more on that a bit later.

You're welcome Pete  :ThumbsUp: and thanks your kind comments MJM - a couple of days away with it constantly hovering at the back of my mind has convinced me that I need to stay focused ;)

Back afore too long - Tug

PS - 'Whiskey' - can you check your PM's  ;)


Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on January 31, 2018, 07:05:16 PM
The piston rod is in  effect a piston, just with a very small diameter.   :D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 31, 2018, 10:01:43 PM
Ah kv, but would it move enough air to make those valves make their nice 'popping' sound  :D

The packing I used on this airpump piston was bought at the Guildford show a few years back but this was the first time I have used it on a project. Prior to that I had used a similar type of braided PTFE packing but that was much firmer in section. Bought originally from Reeves I think, the last of it was used on the Stuart D10 in the Wide a Wake.

This packing, bought at Guildford some time back is very soft, not very consistent in section and somewhat greasy to the touch. I am pretty sure that's why it's causing some drag in that, unlike the previous material, it's softness is allowing small amounts to move into the small annular gap. The pistons in the Waller, McOnie, D10 and Double Diagonal, all with the original packing, move extremely freely but with a very good seal.

The new packing came today and shows great promise. Very consistent in section, robust and very 'slippery' to the touch I think this will be a huge improvement.

The old - it looks dirty because it is, it's greasiness making it virtually impossible to prevent it picking up the slightest amount of dirt from anything ::)
(https://lh3.googleusercontent.com/1acdkB5U7ATDK4YwfCe5R9U3XHDqTh3M1R3enKBK9AZEMv5tkAFLxxYYL36J5HRtee_COdCuOAiWWM6-nhO_bAoz6EHaureO3WGLKwcwQo475XrEv8xdwx0hs6DzQYdfVBqReSeutxsoQ_mkC2vizgkNBnCkzRU4qZc2XwOB40Pd4NbVfVj_kMX6iRKy6OLni9x_ByW2BYrRc9H6rmWPHiF8Yd6mPq9V8QrG0uCSpwk7suUBRHHT1c01P19atsZ9GF6Ievn94bY1RQlqiapa2Nd4uS0ZhmjykwhZaX7zhGPwPAwqCs1LG6vurScFBoSqkvrnzDrJ5_p_jGlQ-w6w6X7s7Opq-P-J_GfjeAzAi7r-P9Oso1aBO0jUBHdefv6k47PdL4cbwY812TWDvw9MV-Bq1u1wkghUNU6w4JZRcrfAMAYLz9XMrYZRMe1gCVLUhotSba72F0ER1RVZqyOh2QeuKQ4DOtJIiG0_u-H5G8GRQSLNZllG-6AcN3t3yJzVSA5CMNFYMap3C7IpBYoMnfTEFRb08nYG5edCLNc05aiC2sFYHdt6AMxCKyqbhMnS0Uv0kh015guM6sFmXQVrcBPJLYpRusbvPwZUcsow=w1224-h918-no)

Although 'square' in section there's no real definition and it's not uniform either
(https://lh3.googleusercontent.com/nEcflLFhkaAdTHf-0zO4odnjMpLsLOQ2nTknEKoLNcQcoKJwPDyc_gTMfjFSAik2ZyTlkfNjCZNkFDpnzfF3DzW0jdrEhO5qETyckEe8BerA3V4bl2ragXOTB3xd7q7Z5w5N6lVo9RjK4xynJbb4Kv4H7TQIPgyiaDEHbMDvi7LQRLZauXANFpYZ-GRaFjIoV5fSmSLGjarnvjH22NqLFtGqw9B7yxbw8UjHqcTtHCYGZYXbX4jrj5v_PKpOF0Z2CD7pmC8BhGyxo3tuWSo88OgkidVK6E2w7EfgwjE59jCyJ4As7r3yUlvjDvA5rSV5ClBTHOEb19R0SNfqcDgfa_QMaJtgji4qeMNICoOcOMMgkR-NYIGj60Wen6HIdSEs537_E4mgeXBRFKdOWqQm8tlVSjKOkMweCdpe0IMEcZh6fL4kAQZ6cCOSjWNilmx9-lB_z7pzLvyPTzYfLimbcR-CZIOxthc4PzXK4D3w-29iPrmOieWbbAHRVLS6XwLTFytgAJS7sDqJvZMjJyY6ZwASz7zqqSd0GKBgHtbe5bJ-KlMCAYQk2cWv5NnXthqHsArVn_68MKmXV4G4u99WGqEWwBbeywMsuCP3_xNB=w1224-h918-no)

The new stuff on the other hand is totally different ...
(https://lh3.googleusercontent.com/0_7kMFyqYi9F6W5SgVtRnZA3EJbyCOTQTlRKFu7cqA-SxLOZqivRfOp_WS-TFvotlUdUBIsdRISOL2gRsC0Q-4Ucj0epd19cNDW3Wns3bwY2cvEP-DT2UuOGxgZRq3sudFCSKeEz39xIF5X2ECDpwiKLxVyRX4XwamQsCqFOfnv06VFLR-tF1WTvtMnex9oJ8KBeLz6caTT2-62TS9fuOF4uNI7tv1Rb7yTV75jkl3w5yLUTfaxlFimw_3tqZiG4ZeFJO3VB2Xfjnp4kjC6SJspswQ-ybHZPD8iZ6JuA4VHXnKUY86XmOzsWwO5G4HnQr76mTrZ_HfSHvpJQIVQYKNrqGCfIyx2Prk85EeWcuYUpm3XPrw5hjc8VtICIuvK8-mFGh9TMENsCP45wem4SW0criV3QGp-vxuf8WgMukHjTbzgHucULOyC7K1vsiLVDzbgdPdLNmQJ3I4A0rZVqlgSAdFNPDMIu-_0E6Yc6hxS6qy5Gpxg7BVhfjMqgP4WmI1SfmYIW5zboBCUQpT9ndK72V6-5Hnq_ojtlVMRanldOWsG3AlGMkNknP0z6fPLbJ-Fn0ZwXlExUT6jG56-gjEpvaAukRqeIVMWJsNfo=w1224-h918-no)

... and it's section is a very consistent 4mm square.
(https://lh3.googleusercontent.com/kfWEYBwOh2kWA1ujqAR4xqXLHxIEd-hIFJ_8QoHPWK08YXV_dZEA857rZOoNu28WV2YOLzsKvvIUNwflH-d7N0TVvAoUdf-4Id000bU-g4unA8Ib7R10eJJv2DuanVkyp2A4Ivs2NV0PjMPGtSIF6z1erCnNrwtdUG9WGylaI80EGfr1yYlVZmdZdQMO5dYCeoApd1TXcDHCDJ704AeoYEptFpWzcF8A3BZw9c1N002V5is-AdcNS7tO1BIdL1X2JKHsQG5yJxJ77kzwDE5n8k4pEpysAQiBNupCV7SANAWHjOIfFouC2A6MjpP7KCHKayHElhLxQKC0YpN01P0dQ-f9l8oLgUzW1TPj7WwAOm9mVYSNM5vNuFt1rU8c567HKuZJwxU-w8BAcT3B5gRs4k4osS1TG6-ARrncQQRoDH-hZORUv4xSv10q2dmxVQwWPIQxOcSl0FzvokER5DKO1m8fedsPq7bBzu-WKAeXArFr_Lblrgzei7esYF89X8wR6NWSm4-kYA-tNpHKcgvPPlI3xMOQmBWSH5W7Oi1HdUQuhFqq57CrMAdVpH3DM0XF6ZslSAFCKe-2zFaT89LENeaN4sHYV9LTBaADbQ7N=w1224-h918-no)

Chalk and cheese I'd say
(https://lh3.googleusercontent.com/WpttE3FWfgmf0JnI2Ihxpj6Kfh7dCRe1nEdHB1uX0ZlLQWJQKQUnGbzl4DTXdEVhPlhC6NQldJ4wbBrZ7i5X5j_uyw9djDYKY60nAGdJvP3Dq5ni6iYSw2c7SqbugevstKmKIngTDQTa7TCbskyV1ww8uykpw90KG6JVCYgYvSPY-MVccpyMfO480OTsoZbbvBQXgB-wLPs90YDQ_-zU0RqdHHMwyZLfoQyNajZTqK4afBtG6B59aNQzOKqhMv-E9tVfgM0ot146R-AiNevLuR5jxngIWDmgH6Xam6X-YOc8B1f1H1Vh0Q7wYvy4o4qkia6bDOVZqGew3rCYqvR3w6Zz4AWvVeJDHwohY65hXcTLF1KJ9Y4n4RsPJ5yFApUncQWsum7X2e9Xmrig7yHjZi__vJ3fcQufqStp87N-Aj7Qn8tgV3iu2bR6QHe5Mf4UO7q9Qg0Xv5NqiBKlqGQKXWgdg-w5fxfCj5adFaJMAXXZhqVGhYClAI9kXlG1tV3i3sG-qQZunxdQT3zm3FQEfoccE53IPUvZI9rt3cmg6drM1nUvZxqvksF_ppC6jRPNlw74bgdNNn3ONdUgZycNBJSLebEhR5Usqal8X1O8=w1224-h918-no)

An added bonus is cost - under a tenner including post for a full metre - some charge the same for a foot :o

That's it for tonight  - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on February 01, 2018, 07:50:14 AM
Tug

That soft packing looks good stuff

But don’t be shy where did you get it from ?

Your sentiment with all parts of the miniature should work as the full sized one did is the same as mine it’s the small details that make the miniature correct

Stuart


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on February 01, 2018, 11:34:23 AM
Tug, I have and now replied, Thanks. Man that first packing looks more like wicking for a burner from the pictures. Actually, it looks like the material used for "rope seals" around a crankshaft at the front and rear. Glad you decided to defer the deferring of the project :LittleDevil:.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 01, 2018, 01:28:21 PM
Hi Stuart,

I got this off Ebay here https://www.ebay.co.uk/itm/GLAND-PACKING-ROPE-SHAFT-SEAL-SOLD-PER-METRE-PTFE-Pure-Virgin-Various-Sizes/182850857559?ssPageName=STRK%3AMEBIDX%3AIT&var=690153347675&_trksid=p2057872.m2749.l2649 (https://www.ebay.co.uk/itm/GLAND-PACKING-ROPE-SHAFT-SEAL-SOLD-PER-METRE-PTFE-Pure-Virgin-Various-Sizes/182850857559?ssPageName=STRK%3AMEBIDX%3AIT&var=690153347675&_trksid=p2057872.m2749.l2649)

4mm square is the smallest they did but I found some 3mm (more practicable really) here https://www.ebay.co.uk/itm/222087697987 (https://www.ebay.co.uk/itm/222087697987) so will be ordering some of that too.

It appears to be braided PTFE and not PTFE Impregnated braided yarn which is what I have used in the past so will have to see how it works out.

Whiskey - yeh it's not very good at all but it was needs must at the time and I thought I was getting a good deal too ::).
As you know I may have a small distraction along the way - I've been digging out some ali too  ;) - I'll reply later.

For now it's back to tha ol shid fer the arternewn  ;)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on February 01, 2018, 03:32:29 PM
Tug.  Thanks for the info

Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 06, 2018, 10:56:20 AM
Hi  guys - as a well known MEM 'character' might say - 'How ya'll doin'  :D

Not much actual progress on the Throp to report about but it has been a bit of a 'testing' time as you will see :)

When Simon first raised his concern over the possible failure of the JB Welded soft jaws I didn't cursorily dismiss it out of hand despite my confidence in the product. I still think they will hold way beyond their intended use but then Kerrin raised the question of machining allowance (I realise now that I read that as had I used a conventional fixing with JBW used cosmetically so something I did not actually answer - sorry K) I began to muse that whilst I had great confidence in the product based on previous use I did not actually know what sort of situation JB would break down at - or tolerate.

I had this thought in mind as I began to think about the pipework required and how I would assemble it - above and below the base - and the need to make sure the component parts could be held in their correct attitudes whilst silver soldering. Musing on some complicated fixtures the thought occurred well if it was all assembled with JBW then all that could be overlooked. Question was how good would JBW be in that application.

So this is what I've been playing with before I get to the pipework proper - hope it will answer any lingering doubts, as it certainly has mine.

I intend to use 10mm dia commercial copper pipe and copper elbows for the pipe work so the potential of joining these with JBW required to be established. First off was to silver solder a plug and a connector into the respective parts. The fixing area was abraded with coarse emery.
(https://lh3.googleusercontent.com/smQfVidokaK2YBq_SRu6cpMVE8I1L3JrcTrKnhzqt4RP8EQKFAdEkBeaw2p77z0F1hDQfct88K5Owbgg_pkuYiA1qO57vWdIrA8cnhck36K_4GoKsSr-Kilgqzkg5kb7I7UbB93dcQiG9ipdOyBoqE6pjFvSvrf7Nq_mU3-VwIXzQUCkSL51D3f4giYp9WXndR0CDe-iLaskXznbzGoghmPs8bl1ma7bv9JKfvKDBTQUsoSuWB23sKhW7Q22cOHfhy92pLohygrO3dBP8veDeCz2DKJlyTktf_5GDj7_UIdk12p0qGfwKLwV63bP4HMCCEHC9OqX0AfsmluAMXOvzcmWeSd7vk0xqNTL8hz7qcBXoqdzG57VDpiUlPfJF57dv6pEB0jkI22wFO32mWQ5U8QEFUew7ppE3qppdpjgf-30l0m3bL8LxKF12SK4TgXF9yXWnngUWKgJy4XT776Xp_BXK5-gSonftb_mmuhoOQs7eAnLW-4ENjjaQ5GkbVkIjOHETe30HwHUCqReEc2a-NM4KK2pM9xhw4ahxKCjfOu4FdRwnKE0hHBqZtQLvyoXpR_tfwsFJ-9lXsNmdSdxuQkRBpz9dqpPDVgFnVvp=w1224-h918-no)


A liberal coating of JB applied to both surfaces
(https://lh3.googleusercontent.com/B33TqMcnOYF9bVkk3QfoUaZfbWpuTqqz7eZA6QNRn5ug8iy2Ynwx1FQVTv4QN18MwloaRvwnqIpMCc0UFblcIGj7WkGMytwh65HuPH74lH3zoQD_oFa9OqqDg2b9C8luvthF4hlWlLiwj-gzNG24YjuH1eXs9aUca3rqL6izqqiJDETSDbQt16ZLWGKjZj8f449XkaXJixYnV7Oh_M6Cjzf2jm5UoMlpqatBVVoD25PXVwBL_wKXv-0kIeCprugNVSuKc8qT7sDZaaiJLlNTr91sMVhM162JRE3A3ASqruU1eK7NuTzNd_zqymwoHciV4jJonEJ2exIAeLzuJU8QWH8l2iivdzWz6vJxtYyLA1zdeLz_SDLY5rbwbDf2f-eabX-DO9_fazSgxQi7VYz18__DdTI1tsntzHmUEXeYVJDQFPujSFNGBqQX-5bVwfajhYRSAG6E10MH7SIYgQ9lAvH_1nXmgFjgAouhsIFjH3qY6iGnbxqS3EReZYQbDPMT01X5saDNuh4bvHpSBfaItSEIw7qyiO4C2hfHtOCjCPZyZUQGQ4aXhLuueHITw_x470AxzIM79UuOwWPfU9Rg-6BqgDecj9gjm7E22qkf=w1224-h918-no)

This was left overnight on a radiator to cure and then left for a few days before testing
(https://lh3.googleusercontent.com/cNf4jCHawiRIlI24sSVacKQxu_f0kF5rKCdjYoyFnGcm01ROVmOBU6BL83dF5YQDsDL4bPn2C716HnjKtNpPtXJ9XLSyrhPNVmUp3acnd39-zteIYA8_AYgVs4Ud3vbPo0tZH3iIBWUmgT3-0olmpp51KS31xGrrEWM4w5rBMtCX_0QTLTmwz3Ec9CohwQJvwZ_8lZ2qwGHqKuVTp2Xch3uLDV2kdjxo1CSHEcdFogVn0cPVazkI_hB6lyMPhUhE2xACoKkdac0aIYngWxOWVrPDMqVru-pemtpSAk6dQIynZR8exNZjyLTGEXDjF7JLmtKpKdBnoCQ2k79SpBa3w0Dci5WuDV8x3GfWA1zBqGl-U6LFY43XZmt3Er3Or8zz-28F_iugTnfBbf5zGVUHSkU5lMLq_lHdzvBQeCA5urdCQircE45Y8MVtNygYE2i3lSgJNu4SZDFThv3NMDrcozKxLNG6Jv419dBK1JtD7jPNBQbCeEj5L688Lt3-C0RVCIcaSsK8at1ZUX6pM19KWwCeM7yrzos23oKXeBRc_zo6Nv1SfhTfbDZ9dnQpUMkbE-ERAjlKi9eMh1i9AJnGtfWqqHNYNYi91GfovnX7=w1224-h918-no)

Filled with water by syringe it was then pressure tested to 50 psi then at 100 and 200 psi .....
(https://lh3.googleusercontent.com/VPd6S2AW7HoZCxOIoTLmZqURYig0kIWRjxvWLLvYc2z65hZevGGfUpxxqK3qmjJwC55A-LhWfNGmDtjhSrraHAfgi9Ti7RjHR-uyegDJsRO25B2NDTR-_xPZHe6S7-5OlCma_ALfmwHXQcwpjFLQKXAKhFh2Yro1F1lmyf_jC36aEcQnzyuYMniTjAu_1HEBAwM0AguaD8B28Lwz_BBdfePMPts9pxilVPRFXSb3cRyxEK1i4cpodJzgxiGfmgT3SdxaySPaeWwFZY3eWjdImO73L5T2aoD2dWNHWXdZ_jsjNnyHf-N2k0b35Wc3Y2hlNlrcAa0xP8WtNQJ1_NurDgIy9VGNBXfNZgCk6dr35IjR3cUV1m3JUjo_jPdbj5z3v68AY7erV_Zl_RTjkAxds09ljQmPymjyWUDOsKyNzndOx7AnOH6mocNkFliEKuzuQtjj1DaWt__UhsIsXgvvAhgtAQ41eo8aEfXFQEC4GdIV5k3t7tA2bHlO7VVrph6fwFOW7GyvRvfL6EOv-IB7r8WFHN6NmH5NMk-Y3bsgfjQf6wPgRSJoEb5e_8pTfXGfM2ROJKZCr93bdIvoOOHNdMtDNg_CxcTAORH2y1Ly=w1224-h918-no)

.. to the gauge maximum of 300 psi. (the gauge was checked against the boiler testers gauge when the WaW boiler was tested so I'm happy that's a fairly accurate reading)
(https://lh3.googleusercontent.com/HfzBoSR5LAjoBDiMcqXBTptLZPNe2uw4-WEHvuKG_amoMd6uTmSiiwR8219HbTJy4ToXKMEYy2ZaD66DYyhpCE-a4duvSDBDlQNedLhbbdqu8g1DVhsdUJHCvc-ViIUyZM_DioP1bqvb-Xn4SFdtDDjG37ZgSdh-GpNfsc7c-sbcEou_vum1oJHRAiPpfdZ8uJcGMrpVK31V1d7uRc0B73OU1045eFJv0eFja5ZkPzJ2EJQqEyOaeG1wQPhJN5HLwrkw37M2qQ3TBR-lamPxQjlS0hoKBKkWebtIjmc-aRR4pB0uE6muAAaOgry85JjdVPVwQ3p79lSj91DHcf_gdDyF9hLJhe0isrAQBWCB6a9Mp_gaHLLtTpTljyIpoO1f9pOV7XOarPilJsZBA-qKjnFTKFyuBFIxxX0VtMIqCNtB5_6p3ir3yEE76uy_gePjQGarBnOc4U76GGa0ZW-xHWSdpUr_SXH6W8JC6nJ5vGLKZr6cUcl6HioW2ABQI-9aCxm3ojCUzNNuN-d1zvirJJpNSFyXPFwh6B_xEWWmohrK7Ii8uXbMXmhFWOYQ90cKELIEomJ8th-8QonnoH-gG-TykPYtH_b5s5dL7MKv=w1224-h918-no)

Left at that pressure while I had a cup of tea only a slight creep back of the needle occurred but most importantly no evidence of water was found on the blue paper - a very good tell tale for this purpose. I am more than satisfied that this will be more than adequate to handle any pressure this engine is likely to see so I will use JB to finalise the pipework connections in situ.

Ah but you ask what about temperature effect - well....


Realising the Kerrin was asking if an allowance was required in machining as opposed to a primary means of holding I began to think about the condenser flanges which were fundamentally just 'glued' in. Time for another test!

An old piece of mild steel bar was faced off (with that new carbide cutter - a nice finish, I think you'd agree) and some holes put through - tapped 1/4 x 40 on one side and on the other counter-bored 12mm diameter. Three holes (two were 'spare') were then machined to the same dimensions as those for the flanges in the condenser and three 'plugs' made to suit. All had a pressure resisting surface of 12 mm diameter - the three 'feet' on the central plug was to ensure this remained.
(https://lh3.googleusercontent.com/TvmvpVCMRWAtAi5_Q0c1ipnl5u7JLUNQnQma2FIshrRbw16PIeokQq4SqTDm81EA6RIf2e8tBwU8gLAjtmC6tq2omMXyfitkGN7ZXuVkdm4Ud_pD-anOeaxPP9R1yAhr0fr4J3SlUbdQGMbOtKIaFoXuIlkUdj7R8ttfNMth2XMlgSrR5FLxt3C-ZxKCTOhiCsjyLpgjaVDOAsIc9DXkvSbYfhA4OhE_RWT_vySZ-4e9dgnR1gqH2Pugepfd4zkGPvYVEe0Iz-cA32T4ylTaTRtSt7eBshsPyW1H9JQZjkt5WveE7BxcGCtTCJj8NHRrpUvScnTDaQT--3WUsm1w3nQJqBogaWQ26TFGVN9ioJpucK88bKa0aZh449sXSYoi1eZ0hdz6I1Dai7Y5ou25X_Up9Fk0jqNMQHLTES5vwgp683Aqc7f5oj8DjKmgNN29GKQBGCTBPi_maTK2-e3nJJdEq0SkP5m61ItEnN_d5hmyvDbySXlgd5fInbyiy4WCy2Qyc_mu39FM4oXPMUVyEoC8ZJIQDIu6RDQGgWCJAmm0Y3aRkuM-lQ-guHQ40MRAq4f7-pTZmgNsE-ibCc80MUagaNRP7707EwrEp46o=w1224-h918-no)

The fits are 'loose' but not 'rattle' fit - .05 / 08mm (2-3 thou) on diameter
(https://lh3.googleusercontent.com/V_PFE9pXEcZd5DBoEFQoULW6dAKwNuG58c0EN7YhiWgsRxzTKSrycqdNjEih2ENPazbLcHgakQYxKiO4BlUzpnDkYODOk1gd9xIxpdUesH5uK-rXRGIUW2Ig6P89Qqpf83nuj2dop79siETEpwjlbkugL4VIzvSBzBcZ1XTf-aMJ-_ihd5pEHangP0dY44Kxb6tDUVpuw0hTw6QFUldmMari0LAwXY4bywP5GfgIr5wB5bvIAbdimu9TQoFwqd7te4F8ZhjnZMV9Wg1PhA4iv0hmRhiwy68rHqUEkwHhpMkGx31yCl2I_2yoYW7RC03wHaWfrC0u_N7HYtJ7gEDGfGJQC6AMESGE-uxrggWVtT67MA7EJC8yBW9GBgnXU2-b5uTS4rGYkCLdlG7DeZWqKWusSX_nXV9v0sECjUflTnOtjlKjONQ_TfTmesBLciBlXTdNf2XhZbqWh0AuvWMJ4HhKRSyJd2F71XRD6MetzO81MktEIqjJLkRv-Bw4RaX1TCgaehzp9-BbGfaGjsUYdFoF4WsovRaqucT-BS4xI5CZ7KEgxwQPtwS_yFkTh2TvcyTxq-88V0HkdCdCm6yxYWobeUd6m4WNH1oOxNtG=w1224-h918-no)

A nice coating on all surfaces ..
(https://lh3.googleusercontent.com/EDbk5UtMXX1tI7kI0g9lyZLAla_QNpsBDhwiVrp79eUT55zEiTQAt7OReuvwSgjWoRDDXWnNLbi-kcju4eXRMDmFYCHfbJXrhzjowj4qR-MOPYzaJkD0pzM3XRCQNOhIj1st9EYcEE-jrS2V2zs8JBFpSTiInnzvt-rYT58lq-gf9o2TKhAe-kigsWC_5IHRXzqtsDETl6u2P4_NLRND4LRn4Ne8ulYxehYxHExoOzIJGYygTvn2gh-fnNnaiXFCBhc7ir_xhb-2HTMyQOIkF4YYOCqCNcXPbOYOBuv7Rq1eZZc_PArGBGmJf8j6DPlVXFtd8j2X9rmarBwv66f3GOtgeB8bB-uoUZU_NzNMHdhf1cysQ9wQyPlZh_--b6JIRAFtrxxAzJsgBBUtvJRUgDWmQIOOlN4rp0XFuTyvN2DYjftE4UpZEVSCyZjDwlSCmW48HBE2v5fpNfOGAp7kIXuZ1uzVM4O6VIr-fLG1zuonv_xwhWnnl0M3YfKfCyIuBo6W03kwLvFn2v0P2bLz9Zx4142rQ-dPRRw_EK2KF7vF3eOWU8aGRI-RG4vkRkadJ4gsCtyjoqOqX2RWu0C_s6iDko6o9FITlTsGN8XJ=w1224-h918-no)

... and once cured the fillets fettled much the same as those on the condenser.
(https://lh3.googleusercontent.com/oOszSjDuxe7w8_QAnkQUqcwzV_fuBmDCIp9T6hmxhNe2uajbAWz5LrBSV9F00iNdeDCab7kv1-hRnSPh2p8MLGhxeHMjyqDsiRLKeMLIuB0G1jZg0Ote6NAKuMEBUJ8BR4X69dWE2Xhyig5EWLdAHvXP-evPDysA34RCEwW2in3VHJHPEx-Ub4-7aA62AI6xvbCjJuuyIsrN4T-11FVHJyuwqVLuOlXKFMPRIX8XfmQYLgf8Ouo0E9_bfghUFIoDpjJkZ3f0p06x0x6G0Ht6NIMac71tVk8VjYBrbjaD7QzLhcSPR_QqoauZwtDSbUsouJtjvfNjo41SJ26rVIooRM1DPGUFQEIko56SSk7ZiP5dO9Dj_-O5UZpGik9kfcS4GPzAeDDMhX70VCUvcoMRYmmXanhmeCtuBv9veo8ZdtrmLtxkI6LxEX7oaSBimiyjr1j9naA1OSsKkgLVGj5OJKf-Xzi-bEgdEQXPTB0z54s9K96OaELjwIMLj_imUWDoh-HHZIYGiN-dIKTWgF7oeOy6BFuxIMGBCdle27NjsTJT4Y6uA_XXO2w4v1dpUbINMdcEqrp-bIfgnQ43SQtPFWlF53MRBnFPFg7KbO9u=w1224-h918-no)

Done at the same time as the pipework this was well cured before testing was carried out yesterday.
(https://lh3.googleusercontent.com/j1x5kauGAXGYBluZZPV6iON-AugRkBDw15vnOxKSaE0Z8L3C-mSh2qslvGpion-p9UADTvsQMNh9LsK9WHnXa0j8_N0DddRBebZH8C9oWw19yoxjwrzeyOvz_gzv6xK1u20BZRdXhTGqEV3K554AKdv3K7nxtiG6981OObGXxgGRIoCWgvxn2lTe3QlboyZxcbB2SsSILCxQN9Fr9tDfe_Ek3GvLuoYd6F6fgSlhXhNLRdawZJDQpkSFqFeIFR4L9NMKNTJWBlvUDbERynymPnOHLsqOUBMhkgCaNytou4xDm0TrJgazBKM_gLyWyHfWdgxfU6M7Fw97E1n8ca1tNxtFpBjJHwFrFaruqUo2gihNxjAbMYENvczoW0TBw0apTq5eWuRj-A_C8uxCsEbSfHA-G4mbFNEZufaaZzQtSvSxl4xGzxNv1PR98TiJYRCfobOYT0cGM2FEpHqN92wYTvFJfFxoc6rFeaz6AvBWhZMEqg53RknvHsWJJRj9lVZ200EjCKaBHFBoTKKZ-IEyuaVdIi-gEcRQBM22krF-pz7YreHQSb7J72CWbkSGokc529unuuwfiL9U0bJ-GaqlCu5UDGP3hxwYKlkmqSGZ=w1224-h918-no)

Each test piece was done in turn and taken up to 300psi as before. Each test was left at 300psi for several minutes with no significant pressure drop or leaks occurring, the paper once again bearing witness. 
(https://lh3.googleusercontent.com/_QREIroR3r7BinFh8n5QWvyvP3bSqDZ4Xubl4vzLiEBSTFFR61Q0tgGnTQboBSBsiTV_FJI87htdfNRbePZb0LPVOQbh08-jWLhD42ratqPjZI5SW97qoHA6xPklxK6peFmtyUvR1yE9BukiXhcJdAQZ23lmSVCxZhVOKaigaXBQOkwFZ2rRCCAO1EBNlc_-qwhkMWiWp85D6UZhdQNssqqdkwktEquQ0GqxjInDSmr4TJv_Hpk2RyNV1NVDt7Bzrp7iyFU5TWDY6KEqLNy3o9McUKOlZl9h-nk7pn2CiARrSPEAKF-Wm8psxNnOpVvFWX6NmWManaiAALChSjFEafhYsJsbzKwG0I9DlhJlCXXrMz2HQuMV103M9FwJXZUJcUWxAZoLBal-iYX2Y2fxENBFaXDQjlpnW51AhMeXUNMI3ofBchwedUrckoudwSraK4CmhCFVhQRH1qC3eb4EfKQN6bfxTaJ1YTXttdoJPxWSCM8RtDTwkvwWGXN3c9uECkSBjGUruNdk3T70APqBI436tyIjjcYdCZ5RPftVdbWRFXbL0wunytNmPi4crNzRPwHptUzL7IJJ4RHp0edOncy1RAjmllL-igKo4dp6=w1224-h918-no)

Once all three had been tested at room temperature the exercise was repeated again with total success but this time allowing the whole bar to come up to the temp of boiling water
(https://lh3.googleusercontent.com/H49_E89UGDol8KfF8recUoIHZ-oXePX3_LBj1pew2sjRwOoWMHMw9JyXNSSex4xZt_luXBsOGCduNQ_vaK6CUaBRsMeuWJrRtYYhnFDjt2SWChvV2QSZpz_1ZDYvB5Kc702jbLGS-9eLqGV0lbKFhsQ2ybeNiDcKMgytEh4KW8owIzPqq4Fis9DiY9cw4ypzOZL8VuzKv5J0sXch5ElG2WQisUhlnCgV-GhrB494kWI4A3b2y57bUEUzeMbpanUqfD3sqcN2f0nfn-6tYS_lNTKn6vqxJ-ExXAIBrsW15Owdfx0fmdm2ASuYcgfTNYeTPeeL5ipzQspWw4HSrfF5qZznQt4bebQX3cfmVwVVCT-pzjXymuPl7z9DtQma7D5ZjafphAEoVNPffHkApqAA2XtX4-xPSqKlg3bpieI2907XRSlQJ5TnDWJXzuM8F9gcIDT8zLCgzLLrlKPfG4obUzo5UrRpMdvcCISUbTyhVlRycEiLAwNsTfrxz_N3Cj6TJ-mkJ9MjOkoFRylY2FtZoAC7wletscK2IV_8EsF0cwod_fTu-kkgfbmiWbQHBXuGgyq-TkiFNo4_xH0V02WHbRYlHKYmUBF4D1i2N4SS=w1224-h918-no)

The bar after the test
(https://lh3.googleusercontent.com/Qq401GEM4jpBHhhbxdJhBCCtRgIIVu5amnO67e-JVtUU-pBvIW9D_pZu2J6UqrioydXvMlNb9tnD7X6Hk2s7Xw_Z5JXfxTH5Xh_4tk3o8y9Qc1J-nWDH0uJG5vhpJ9s3YzzFOAz3BO6VJ3SVTgxzpuoyPbl3MjeL5h2Fo5nTh75lPleDTCceklj0S2h7kaeB51L20jxSAIF70tDgMbo4dTJ378pR5jpRlrG8rjo0BnvTcO8ykufIbl_C_geKspTX03z5Prt6Sb1c4gjdoplDQsqDWrOdG5eQeU5_20jGVHv0GEc6ZPJvCmYiDFeXnKYIQ961HQlZFaemjULeu3X_8p3I44uJ3JtBgjJlabpAmbBdp8eLPnR2yUsmIW315IurwC46CheJ1iEs1VAgzNdEy3h5DoQhWLn0ZEprOsxbg2PcTKjRjpyLtON6emFnHNi9nDzptMm1u9UzQ4xhzEJ5CxBq41bemG2EidzC670AIMMzfEsdW628_6vZeHq-2RjiZ_p4W8XuZnghDiqde7P7KmtbuTSPA4cyRIzMeBkxFR8zIN3rDJnINRRidWYgezLnRhtYKg9DOjyfTK88fouEsyvVQds30eFixWXFmjJF=w1224-h918-no)


JBW appears, using a scriber as a probe to have suffered no degradation so I think I can safely say that for me I am more than happy to continue to use this product in the manner described - for the task in hand. This was not done in order to advocate it as some kind of magic cure all but I do think it has great potential in 'casting assimilation' on engines that will see little work. How far someone would wish to take that is down to the individual I guess but I have satisfied myself that it is as good as I thought it is.

Well, I realise they are not as scintillating pics as perhaps some would have but I hope they serve to inform - hope you weren't too bored.

Now, I guess, I can continue on that pipework  :) However whilst this was curing I did take the opportunity to have a side step for a couple of days  :D .....
(https://lh3.googleusercontent.com/M-9S7lvplvOy7XXU0jObg-y-1TYv1OmZ-9DrdxMAWWU0O0AY86_7O4OFR7tUa84NAGuNLejTNTpiU2kzC7EbhJF2Su2Opo6_lxXBSdEFWQL_coY0D2kgqDtdXCR1_IEcWIWUJkvYeUiIBYWt6_n5R_Kqg2QcxYdO-jH7WkhF_Y_VwkRQbEXc5LufqWAvyzVb3qFCAu7bEd40IdGvgyS8ceZhKnm3tIEjRCy6oQvpEQNDDcnbOSnZJvqWBJxsGtQFggQRXpjGtZOT3Q3O75iRCkq3GCl_cjL_QNd_mqSml93zSc3VMch5od0leQIcfvmfLPdxcDoQI5K2vN8_38ndim-0jF6x16oZC24qnh4LfbMjcjyVsG78yG_rsgaPOLjcu5zLD7AvMJgX4w1qSoYVRsxnVNcFgOgmQLJZCQV3hiijaTZw_acyK_6c7OgGEpb6Or6rQWi1v8xRzrTajyUe9nG7laCR0abm1bAHxXgr42yvW9Xk8i5l4_pw7V_Qf_P__qB7P8RPYdEURH2EirFDgqbZF_G4KlgaeW9a3BQ97egiNodPseP7HYwndIQPDgc7ZWvoXIHL-uXZKP013XIJvIf6HlP7hfCw_jHn6g0A=w1224-h918-no)

Two cranks for a slowly progressing pair of 5cc diesels - more on that perhaps a bit later


'Thatsit frum tha ol shid taday'

Regards - Ol Tug


PS I think I should point out I did this in reverse to how it's described - with the success of the testing in boiling water I felt there was no need to do the same with the copper pipe parts.

 


Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on February 06, 2018, 11:13:12 AM
Nice bit of test work there Tug!

If you tell me the pipe diameter and the length of engagement in the elbow I'll work out what shear stress you've tested it to.

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 06, 2018, 12:39:42 PM
Thanks for posting the results of your tests Ramon, all useful info for those of us whole like to do our own thing rather than limit our choice to available castings
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on February 06, 2018, 01:12:38 PM
I do like to see a bit of science  :ThumbsUp:

Thanks,
Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 06, 2018, 06:27:31 PM
Hi Simon, Jason and Rod - how are you Rod ? - don't 'see' much of you these days.

Simon thanks for the offer - always happy to let some one else do the maths :D

The pipe diameter is 10mm and the length inside is 8.7mm.  Do you fancy doing the other pieces if I put the dims up?

Jason, although I have used a few basic conventional castings on this engine, like yourself I'd much prefer to create something of my own if possible. I'm convinced now that this product will allow that without undue concern for anything that I want to build and run in coming years  :)

Made a start on all the pipe flanges today but not much achieved due to friend John bringing a carb round for the other friend John for his JLE build - wonderful world this model making eh?

Regards - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 06, 2018, 07:58:39 PM
looks like some very successful testing there Tug.

i have been a fan of JB weld for quite a while now, used to use it quite extensively on diving torches, tested a lot of them in a pot down to 100 meters with no failures.

must get some more soon, my tube is a good few years old now and getting low!

hope you've kept warm and out of the snow.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 06, 2018, 08:54:43 PM
Hi Bertie - yes warm is the word but there's a good layer of hard ice on the car already .

Diving torches  :o  you're on home territory there mate - was that commercial or sport? Are you talking full size pot or a bench tester? 100 mtrs is just on ten ATS - good old JBW eh

I spent near 14 years diving offshore, mainly with Oceaneering - ring any bells?

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on February 06, 2018, 09:03:53 PM
Hi Simon, Jason and Rod - how are you Rod ? - don't 'see' much of you these days.

Simon thanks for the offer - always happy to let some one else do the maths :D

The pipe diameter is 10mm and the length inside is 8.7mm.  Do you fancy doing the other pieces if I put the dims up?

Jason, although I have used a few basic conventional castings on this engine, like yourself I'd much prefer to create something of my own if possible. I'm convinced now that this product will allow that without undue concern for anything that I want to build and run in coming years  :)

Made a start on all the pipe flanges today but not much achieved due to friend John bringing a carb round for the other friend John for his JLE build - wonderful world this model making eh?

Regards - Tug

Hi Tug,

Yes happy to do all of them - the pipe one is 'nice' because it is pure shear whereas I think the others are a mix of tension and shear.

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on February 06, 2018, 09:27:19 PM
Tug, I hope that I don’t get charged with insider trading, but, just purchased stock in JB Weld :lolb: :lolb:. I must say that’s a quite definitive test and great of you to take the time to perform it. Actually, this confirmation of strength and temperature tolerance should make JB a great choice for “plumbing in situ” in many applications  :cheers:.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 06, 2018, 10:15:30 PM
 :lolb: :lolb: :lolb:

Well as a major share holder Whiskey, I thought it only fair to share some of the profits  :D

After Simon's comments it just kept nagging at me so it was an exercise well worth doing - I'm pleased to think that the outcome was worthwhile.

Thanks Simon - I'll pop the dimensions up tomorrow. If you're happy about it, it would be nice to see the results here as opposed to doing it by email don't you think.

I was going to silver solder the pipes into their respective flanges and just use JB for the final connections but have now decided to use it right through - more on that in a day or three. Dentist tomorrow - new crown on the cards and appointment mid day so a 'broken' day for me followed by the delights of shopping on Thursday  ::)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 07, 2018, 07:31:57 AM

 Dentist tomorrow - new crown on the cards


What not going for a DIY job with some JBW :LittleDevil:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on February 07, 2018, 08:28:04 AM
Hi Tug,
 A big thank you for taking the time to play errrr test this out!  I for one enjoyed your first very informative reply, this one just adds icing to it!
Can see how useful this stuff can be, but as you say how far to push it is up to the individual, not sure if regular use in a live steam locos would be a good idea in a hot pressure environment  but you never know it might be fine!

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 07, 2018, 10:24:49 AM
You've saved me a trip to the dentist there Jason - found some white miliput  :Lol:

Simon - the dimensions ...

(https://lh3.googleusercontent.com/8cA5Lav_ztjA7_qR1iJWYcTuqA2qox2roF-wpyZjgML3ivCjpU4MQQ6P5IpunlJP4_e1GHGzdHR2SzzdSVC2twSYKOJr9NMbNooj4EK5Ir4SWr020UxnJ9wtThf_opm881WQEiA3AimtIw0AvHXhnqEtNi0MZqAdt8CVSvBWtWaoMxKYBpcGRKyTW5a7Plfw-7Y_qUnQkfvPzwdL7apUdxNdFAVvGmUpS599Z3KYaPyYACQzBEE-wuNU_xscij-HcQDRJdVylJPpxMpRBJrhjbebnIONtbzZYNlwezK6RkXI3DeQqNANTFUgWWBVeD_Vh2FKA9FYYgkKrdsraTAUFTn16o6uvDYMsHVCTkhV7Kw17-Y-DtjKM4gWm-Igwb8XPDkUuGKxBg6W2XXqYc8bfMsCzY8g3ISHhaFBGCEJWv23elKq-pe6YvJ-nKTlW-vyRnTTA-nEGkgfjzWyMXWhMu0oYL90i3NdcBPgt3k10eUXanTWXWPgGGR24MAR3mlHqX6aIqjpE_EE6YQKy26wNxJ7XIllRzsg9xxNviJohyknBDzqiugsH297SHAeDEn2u_12tjjHM78LMPT2iO4IZBZNOxPHfUV9TmRCWIgt=w1224-h918-no)

Left to right above

#1 - 18.3 OD x 5 deep with a 12mm register 2mm deep

#2 - 12 mm dia  x 8.5mm deep

#3 -  23.8 OD with a 14 mm dia register 1.8 deep

I would say the fillets have an average contact dimension of approx 2.5mm each side.

Looking forwards to your results - thanks again :ThumbsUp:

Kerrin, it would certainly be interesting to see just how far this product could be pushed. I would have liked to increase the pressure a lot more as I felt it could have taken a considerable increase but was restricted to the gauge limit. When I had the WaW boiler tested I gave the boiler tester a really nice 600 psi gauge thinking I would never have a use for it ::) It would also be interesting to see at what pressure these joints would have failed - with a better pump and a bigger gauge maybe another day  ;)

That's it for now - I can cheat at least another hour in the ol shid before the comfort of the dentist's chair   :-\

Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on February 07, 2018, 09:49:47 PM
Tug,

Pictures below show what I have so far - not sure I understand the dimensions of samples 1 and 3 so have left those for the time being.  I've included the strength of one of the epoxies we use at work and estimated the strength of JB Weld in order to calculate a 'Safety Factor' - what we really need is a test to failure to get the true safety factor.  If 300psi is your pressure limit then we need to increase the bond shear stress in order to get a failure - either increase the area exposed to the pressure and/or reduce the engaged length.

Don't want the moniker of Captain Safety but you are using fluid to generate the pressure in these tests not air yes?

Simon.

PS. Apologies for the metric units :-)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 07, 2018, 10:37:56 PM
Hi Simon

Thanks for your input here - much appreciated :ThumbsUp:

As said previously however, I don't have the kit to test this to failure as is, nor right now, the inclination to make more test pieces to do so. Not being someone who likes to experiment in favour of getting on with the job unless really necessary I guess unless someone else would like to try I'm going to have to go by the seat of my pants on the results so far.

I'm quite content that running this engine at a maximum inlet air pressure of 20-35 psi (hopefully more like 10-15 psi) all joints are going to be well within whats been established so far - I really am confident that the JB is more than adequate - 'for the task in hand'

Have you purposefully been cautious on the JB at 100C - as it clearly states it will hold to 550F constant and 600F intermittent - was that a Simon safety factor or a professional one  ;)

My friend John found a spec sheet at last which may be of use http://www.aeroelectric.com/Mfgr_Data/JB_Weld/JB-Weld-Technical-Datasheet.pdf (http://www.aeroelectric.com/Mfgr_Data/JB_Weld/JB-Weld-Technical-Datasheet.pdf)

and yes, I guess you missed it but I did say I filled the void with water and of course the pump is a water pump  ;)

Thanks again Simon - sorry to distract you from the L&B  ;)

Regards - Tug

PS If this sounds a bit short it's because I'm well past my 'sell by date' tonight - extreme tiredness creeping in fast - apologies if so ::)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Don1966 on February 07, 2018, 11:16:13 PM
Always great to follow your projects Ramon and I must apologize but I have been falling short as of late. But I am all caught up now and as always  magnificent work my friend and always a pleasure to follow you.

 :drinking-41:
Don
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 08, 2018, 08:29:27 AM
Morning guys :)

Boy was I tired last night. I had spent most of yesterday drawing out a stop valve and am sure it was the concentration that did me in :old:  To top it all I machined the main body only to feel it was over scale when placed on top of the cylinder.  Turning it over realised it looked better as a side entry rather than top so it was back to the comp to redraw but just completely faded in short order. What I need is a good morning out shopping with Sue to set me right back up :Lol:

Don, really great to hear from you - I hope you are well. Thanks for your support as always but there is no need to apologise  - we can't be everywhere all the time. Did you ever get round to making that Waller engine in your favourite medium  :). 

Simon - I've just converted the Nmm2 to PSI on the copper pipe test which is 1200 plus psi. At roughly a third of the stated tensile strength does this mean a good safety factor of three ? If so that is more than adequate for the task. All pipework will have a thick coating of miliput to simulate insulation so that will be another plus factor.

I misled you on the dims for #1 the boss is 18.3 diameter inserted 5 deep then a further  2mm deep at 12 mm dia not 14 as stated.

#3 is a 14 mm register just 1.8 mm deep from the flat surface ie - the major bonded area is on the top surface.

Back soon, got to get to grips with driving a shopping trolley ::)

Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 10, 2018, 09:05:44 PM
Hi guys - a bit more progress on this project  :)

The original calls for a floor mounted stop valve but these are usually only found on large twin tandem engines. Many of the engines featured in 'Stationary Engines of Gt Britain' feature fairly large cylinder mounted valves with either a top or side entry of the main steam pipe. This was a feature I thought I'd like to replicate so as said previously began by drawing a top entry version.  Having machined the main body from cast and tried it in situ it looked over scale until it was positioned as a side entry so it was redrawn sufficient to get to machining the rest.

The body and base flange are turned from cast iron. the end flanges integral with the main body. The base flange, and the side boss, will be JBW'd in place in due course. The side boss does not lead to the inner chamber but is for a dummy valve to represent the heating steam valve used on full size engines to by pass the valve to heat the cylinders through before starting from cold.

Despite the odd distraction over the last couple of days the parts were soon made.

The inner valve seat was turned from drawn phosphor bronze, the spindle from stainless with the operating thread screw cut and the end threads on it and the two guide bars from 7 and 8BA screw inserts Loctited in place. By doing this it eliminates a run out for the thread weakening the part or screw cutting up to a shoulder. Incidentally- when drilling the PB insert initially I had a bit of a nasty with the drilll shattering and as a result a 'spray' of drill shards hitting my right cheek with some force. (See elsewhere later)
(https://lh3.googleusercontent.com/1z5WDMYjnHV5pS7jT1NNjrw0N9DoBxPupggMbb9Z71pVKTo_aJlGfkS_UFjjX5IUYokfQp9K4gvB4ETPU3Leg3HKZItB_2c2BKeZPrfPI_O5ZIW5dh839vrj-K_B4UHXZiNqqE-TTk-qHk4N0cY1kxxTFOJgTepphVu8RhDMF3OQ4u1GtG8zGOT_LZU1dSEB6Z5uLAGRW4dkaagPUGyd7YMdVllbUa7BAjpNS4Oox9UkUFgh3pHJZ2vuirVwaupe5v9El8hYmDnMY1ziHb9y7uH_BW_PTPeKOfTZe8fgUwulubzixyN5Er6v0Lot3_TkVhDeBipzph8eIrtO7SzVJWAkeQwgJr3FIP_HGcSL0W-8CGqx9JLu2Khtpa-rdpPz5Gg1FwoFi03sKM93B-ep5nM2TAQ25rXXEmmq20RSkcoNn5UPGyf4E_5ucf-wB1BAHmXeiRsDV1q6xxyfpss1oziAv9i9u7SVOKRv_kjcKID1C2oqqay09_k2vbL2rjgUdoS1nYBPwes79qZyW5iigMasjLxNObWI-paQnPmj1y7JIxwQJb6C_XlG7t16-YFsPbemYAancvmmWqMtDyFZt1NhhzGT5k80W8cWp_Ml=w1224-h918-no)


The PB insert was Loctited in place with 'Studlock' - enough to lock in in place against the rotary twisting of the spindle but should be much easier to remove than with say 638 Retainer. Thoroughly cleaned with Methylated Spirit to kill all traces of the Loctite, assembly was straightforward and the valve was ready to fit
(https://lh3.googleusercontent.com/nht5Hs6AeZ7xBpxlsNCyH_omKo61sKujQPPRJqE3ulBY_0uDa8XIyzBeRVpVDFcYsO1XQ0aQ-DYkgF4uaih3zmF0YEfeXkJSwjLhhXFhx0RgSKvUJj2CoZNy_uOIYOSo1jgvYisBaBPVeGtK22ZIpaWyLvbyA-r_v0UM1Vs_NhGWBmI5YGvNgNkeYXqo9IbR1StbGe5FH_aUgDuCCiiGQhCRfxkdjAXLthHWrQTuPlAP7PbEIH9t01-KCTcbUu_aWv8836WQytQzwASRxZfhBHttvP3AqZwscGgTgCF5XUDQx933R-R7j04acwu8dQqmmCdLLsg4FcfEjISxzEmOAv0sTK8WYLzNjXwKJe4RbJdDPrQpjdtfWGS8p6mTonx1GighKxxooAzD-3r0B51bi4U4GyW8WqKHCCVVeTBpZRxyYENhoCnNP4jmVjrpl3hLsn2V8DwvBZ59t3x1sFC59HSlIle6uibTpK5KxH-A153pSNZDHb73bHmGZky7eQN2rmxwd2rjqxwPIM8PZWcK62tFQCMUl2C47kOZsAXoZ1MJf6zczC5cd4BLY_E9fe5_7n5zKhO7TTFDJsyJ6z-GQThdyzQc8lJTVQLM3SbI=w1224-h918-no)

Here's some pics of it in place - once it's JB'd up I can get to grips with the pipe runs so that's the next session
(https://lh3.googleusercontent.com/eh1xhqiUBvBAe4S1gJSdbS6Eov2ONno2mH1nzkJKYPJRiayB1IvrabfF4FBI0YzCUxeG5gmTWQ2SgYM1ah4wHZQzosdPfZhnrKxPqafRio-NBgV0l1EACHICsp3bSt2fK69EbydBeoEpkmybbg6b5_Ny3uGFR7up_kvUIcewJp0YjxDulLmXBfSjXHh7_gQnJ6Sd0gQOFh2iPxiyNS6ow_3GgTKJZN8acHZexa-ZRTDRv8HVvWnM5NAIHOrTGVK7r3P9oMzDdmM1_UiuXvYuM6bF1rZfUAYCvmv3GESeX_CcNZMlH_dwZgrlbmCo3qNPlpKQiQuZBtzl7HKO5HNS6HyTnR3uEmFpF9XUUZWaGGtpbrmIIWmV8GJIZGe0SEKu9sQODwwdWuZycObBBWtvP6NfklH3sCgxFlET9NYld2dR_RLj7GOfws_Y1GK8qKT7NOcbQRC_0AA1iNpPcrjLGOleSsTyaiT4uYm64KFpjyigNE7dtMTEwxhgsOtU5keG22tFmAE_pf6WxF2i9i0iA5VCMJWnrfWSxDm3FI_e6UhCvXrONmzSqsX7Q4vydd-sQWOWASKqN-_TMEb2jeC1ERQP1cX3YcRMfULWmxPf=w1224-h918-no)

(https://lh3.googleusercontent.com/8cHDbrdaXu2jctEAK6zsWd4LNbKraOuMObq8XZDsXJiJZp-SUH_FtlVBNxw5iiC8AHlBgKvqo06mp0b3MQafueBWww1qGgeUC8GF_pwjUxrP95JrmrXP7Nq1yDLcZXEvO02WUJAFMxtyb2H1zAaci2if6GB5CCmbtHjhXYbkl2O6SVVDCmurqs0PpjTvMS8geHq_jsbczzExbaZDaWFzgpZEFiYQ_5Ikerj6IFymvWeKqcNUAQa4rYtkkPTcL9Xb2uO1ITqDFKkj5eLfXm3PGCEJngQjeXqXsukR6HPYCjO2NrzVaYUIaZVCLb-mf0XMRN4eoTLgiMP2FwaRWaqBqBMk_7fROJnNyZh9F0WHnu6kUqfpMii2FIyGLs7cJOk_4O6kq7yU6pADniSFK-wFOIUxJ4h7Sql4K9goY6cCAE93dMT3UzE7MidpBkUsTvGNpP3bPbhkXPo0j6XfmirWol2CsZcTkYep3kDYMFAlfiZoeTqx3UcBtX2fpZviG_OACpoMqFPD7Bdu2_eGbn80B6ejEJg9eocAyhWHXrviMwc9z7rcpdbHyRuwa8DLUr31Y9DabJJx0PTrE0M8gxpJVP0pCwSzkua-o6t2twYY=w1224-h918-no)

(https://lh3.googleusercontent.com/67mfWtxKBCK_pBVXhEA2tX5W1N2HzKmWHnuAqBXhJiW7Lg2WRU7FzeKudxnAwIQO7f33KXEgCDKhEpCg5lSSHDw8fKe484Qy1y7mnREh-cOoPLBK-QRkRlhLfNbLcG_OoMsFcKV-m-vhkad6SsV2Genyzl7O34VOmqbNVEML58eCrELZ0brxUPcBic4bQB0ScSyEH1HbhNggi7YOpJfTfQN2ZNTtQMm53gmxzLBPfI7JULy2qFhipWIyZHN-PFWRzZ441scvlFuB50wthOlPBGoWKL8zCc1NxVdTWFLJdVNBrXb2BvRjusUcvYbaYomQ0bnD-MwLJ178vc1zbtzkLRQPUm9Fm7R0_M78Dq5uJAPFrM3u_A7LSL_lOuBndFizEdGE-ZPaZK5aRYui2RIuRHjIg28KhLrLrH_Aizb1msa7_VphmJ56wbB6VGGH0ISw42nZzS8eINtWHHF2IJPCtTy2TKwiRfpn4Qgkji2CokgLcGIPJSJxRHgwuYQ5GcQp7H9ZeIDsYG4DtLnKtbGBYa3-7LMkpVPJ1qwsr2fZ0a8iCZ5XNbeNb6qyZ9BOcMI2Rl20VjdMQE-BRCzukYvM6VLQYlENpD1dpLEDZywR=w1224-h918-no)


Well that's current state of play - another step forwards. I bought the paint for it on Thursday so want to get to that stage as soon as possible  :)

Tha'sit frum tha ol shid for tha week

Have a good weekend Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on February 10, 2018, 10:17:43 PM
Beautiful work :praise2:             Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on February 10, 2018, 10:23:04 PM
Gorgeous Ramon. WOW!!!!

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on February 11, 2018, 01:26:02 PM
Ramon,

I like the shape of the main valve body - were the radii formed with a graver or some other technique.  Haven't forgotten the JB Weld strengths and that datasheet has actually got some useful and meaningful data so will try to review and post something on that next week.

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 11, 2018, 01:50:21 PM
Looking really good...and how do you decide which parts to paint and which parts to leave bright/self colour ??
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 11, 2018, 04:54:42 PM
Hi Guys - thanks for looking in  :ThumbsUp:

Simon - no rush but it would be nice to see what you come up with in due course. I formed the radii in my usual scientific manner - a series of flats, a file and some emery  ::) I did however hold it in a fixture to machine it and reversed it each time for each cut so it was reasonably symmetrical.

Willy - basically all the cast parts and the condenser will get painted - most of the turned bright work - rods links etc will remain as is.

Been making the first of many studs today - might wimp out and order some 1/2 x 8BA from Stuarts - yep mortgage already secured ;D


Now - time for afternoon tea with Sue - in her workshop ;)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 11, 2018, 07:41:21 PM
Im sure it wasn't that long ago i looked in on here, but seems iv got loads to catch up on!

that valve looks fantastic, a work of art in itself!

my diving was only for sport, mostly in the channel out out of eastbourne. my 'pot' was a 10 inch  x 5 ft long pvc surge arrester  off of a pump. testing was carried out by filling with water putting bung in one end then pumping up with a small bit of air. was very handy for testing battery canisters and the umbilical torch assembly. i kept meaning to put a window in it but never got round to it. 


keep up the good work Tug, you seem to be going along at a fair pace
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 11, 2018, 09:52:21 PM
Hi Bertie - hows it going? Bet it's a bit parky in your workshop eh?

Your talk of umbilical torches - (flashlights to some  ;))  takes me back to early days in the North Sea - we used to have huge bell like things about a foot across and a large 1000watt 110volt bulb in them. No glass, just a cast bronze grid over the front and totally open to the water the bulb was screwed into its receptacle which was deep inside a sturdy rubber surround. Plugged straight into the mains on the rig, water pressure squeezing the rubber alone onto the bulb was all that kept it dry - yeh you want to believe it.

I can clearly remember onetime crawling about on the (North sea) seabed around about 120 ft looking for a lost drill collar with one of these - the vis was so bad I couldn't actually see the glow from it in my hand  :o

Oh swing that light  ::) I rarely think of my diving days unless something triggers it - ah really happy days ('cept for the travelling which is what done me in in the end  :().

Sorry to be off topic guys - couldn't help it - 'Normal service will be resumed as soon as possible'  :)


Back soon - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 11, 2018, 11:59:00 PM
Hi ..I always get my screws and stuff from EKP as they are the people that make them !! also if you ask nicely they may have stuff that is not in their catalouge. the also send it the same day and you get the next !!! Will there be a governor attached somewhere ?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 12, 2018, 08:25:41 AM
Hi Willy - I use EKP most of the time and you are right, extremely good service order to door. I have just ordered some steel and screws from them over the weekend. The other company I have had very good service from is 'Items' - their ad is always in the ME mag.

Neither of them list 8BA studs so I checked Stuarts who do two sizes. I was making mine from 1" 8BA bolts which have a nice long plain shank. Supply is limited unfortunately, only had 50, hence the need to get some more. As far as I can see none of the regular suppliers do 'bolts' any more, only screws, so that source has gone - can't even remember who I bought these from I've had them so long and as you say EKP makes them for everyone it seems.  It would be worth giving them a ring I guess - I'll try later, thanks for the tip.

I don't know of a source of 8BA dia steel either unless Stuarts do it (didn't think to check) but I have found that many wire coat hangars are the right diameter  ;)  Perhaps a little softer than ordinary mild steel it does however take a thread well and does the job ok. Yep already raided the wardrobes  :Lol:

Yes it will have a governor - the start of it can be seen bolted on the side of the bed plate. I didn't take any pics of it at the time that's why it's been overlooked. Still quite a few bits to make for it - perhaps them ;)

Regards Willy - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 12, 2018, 09:19:35 PM
Hi guys - HAVE YOU SEEN MY CAT ?  Ha - that will ring a bell with some of our UK members  ;)

The day began with a PM from a member offering some Tig stainless welding rods to make the 8BA studs from. A very kind gesture I thought so thanks indeed John  :ThumbsUp: This came during a spell of domestic duties - yep had my pinny on but sneaked away for a look  ;) - during which I was thinking, as you do, about matters more pressing.

I had been thinking about running some material down to the size required. I had made two such tools to fit a six station head made years ago but dismissed them as the head limits the length that can be made. Musing on having to make a new tool and not wanting to spend the time on it I wondered if it could be done with the travelling steady then bingo - brain engages  :o (rare occurrence these days :D)- what if the required support hole was drilled through the steady finger itself?

Finally divested of said pinny (metaphorically speaking you understand) I went in search of suitable material. There in the steel drawer lays some of Mr Whiston's best in the shape of a bundle of .104" dia steel rod - Now how long has that been there  ::)

Well, it must have been thought of before so I lay no claim to originality but I don't recall seeing it before. Set up the travelling steady and drilled through the extended finger from the head stock. It gives total freedom of the tool via the top and cross slide and worked a treat once the tool was ground to suit - first couple off didn't have a very good finish - and the diameter established.

 I found the best finish ensued using a mix of neat cutting oil and Rocol (about 80:20). The paper was to soak up the waste.

(https://lh3.googleusercontent.com/sUHqqmN40H__79cssGEIf4IVdu494XdNBhdvamAC-jhhTVI0eYJJjYQ4t4o-X1RIv0BggtF4h68hPWmJP3DH1z5_v1exjDqmzw2w2kQuONiimaGSxUV99IqPzTtfEieCIP_ZsS1_2LyDbrnzK_ZvYke_tNsNCiIFvJHyIeZDJd_WX1Et7IILZsWVZ6QjOWX8WQu5eV7A0GWq5xvVrDbshyVUgAbn483drGCfntcrfYsARL2nPffVurO6MezBEDZzpgpZnDGfNDmBJpC2CYCwMK0S7GEQTh3-H01jQL7J1uGm7FpEYPS3X3eMJnJt41PGkUMC8DlOnO1hyDoId0EAR8YSe2wY-JZ6ZHPDeJbAzInp5JyaJIsnWDHAXwJVSe7cAWGXTRI4IICWqsDRCPcawuPKt3sSKR8GZxSuDdK5z_TmrIAY2SjRoWnj40VSa3lTxV_zZZDCsrJi2fg_6w6N3POY0NxqbMk-sDqihplgsNN81GTnGzEuUdtsthJAc4mhCrKrObLsnEhkk4fdD7M7R8REF_4aU0cCiHrW7XRdRhYArZfy1RtBovD-8cxVza5THbKcVwcQNRIJctt54sHvaJ_SF9ClQBv6qj2tAN1S=w1224-h918-no)


Simple, extremely efficient it produced near 60 inches of 2.2 dia in very short order - hopefully more than enough for the studs required but it will be a while before I tackle them.
(https://lh3.googleusercontent.com/bPpAoGPAOBP_CDH5Tf2hP6aq8d9H7NsizYGmcmMI3fng9Tf60mFPWUUdYZ-5GFOJvtbMWraZt9jI4-OiUo5_wwSDb4xxWoX2PA_fdiEyQ7CdXy9hELA4t-vm3i9bl3OEAOfCgrG_gTu_mTY8V2duZUpcg84dnCJcOEn3vaLNGkacgOaW41CvQbcCTcuMdeoLllnX0SI6mFPe7lrlppygDh_iXaGaOQDVmEk_lBaRL92fn_bxqylZfyO0-tQO_QhF-LLy2Td6ZuDA2Xb3XXFboI7hMG-S15v7Kj8171QFzCV86yd6fa2c1bnLDLF9IRD9yutVewZ_G1j6CZASiCuI0eVN51rqMiJ1r-rlzgc5Awzqd2QICBO1EMqWHJiqGQy20SdXzm0WlOTnO46FmkhrsjZ7Im9upnwwF1Csqhu8sds2WSwMnzcxy9yrkRa9371hlk9ODDNLXRVL2prluK-1HTY4En2LbwSFbeUkXSP1oLnXvBXWrXTWDEaMyeyENJz98xWFtvNambXzRoq-ZyZxBO4V7KxeD5pdsZR7SK9WBDKxo-PpuPMGqcHfw1f0HGHmHc_ajBueoaVSLdM39eYP0TvqGzayJO2bWMJ4zHw4=w1224-h918-no)

This is the longest I've 'run down' and was pleased at just how consistent it was - shouldn't be anything else I know but with enough material at hand to do the job I'm well chuffed with my first attempt at something of any real length.

Though well 'old hat' from a machining point of view I hope this approach will be of interest to someone.

Oh yes - for those unaware - 'Have you seen my Cat' was the catch phrase used by Whistons a company sadly missed by many of us. The paper catalogue (the next version always eagerly awaited for 'new stuff') - no pictures just seemingly endless listings of surplus materials, fastenings, gears  - just bloody all sorts and all at very, very reasonable prices. Missed? to those of us who benefited that doesn't even begin to express it I'm sure eh :(

Tha's it fer ter-nyte  - Ol' Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bluechip on February 12, 2018, 10:09:06 PM

Hi guys - HAVE YOU SEEN MY CAT ?  Ha - that will ring a bell with some of our UK members  ;)

Finally divested of said pinny (metaphorically speaking you understand) I went in search of suitable material. There in the steel drawer lays some of Mr Whiston's best in the shape of a bundle of .104" dia steel rod - Now how long has that been there  ::)



Hi Ramon

It does!  Used to go in there often in my travels ... Bate Mill IIRC New Mills

http://www.modelenginemaker.com/index.php/topic,5131.0.html

Look familiar ?

Probably where that lot came from ...  ;D

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 13, 2018, 10:35:49 PM
Well I guess that little discovery wasn't quite the biscuit I thought it was - like I said though I haven't seen it maybe it's been done before so I guess I was teaching granny  ::)

Dave - during the eighties I used to spend a lot of time in Derbyshire - around the 'edges'. This was a long period of non ME modelling. One weekend the weather was foul so I thought I'd go up to New Mills to visit said fondly remembered emporium. Couldn't find it at first but asking around found out I was a few months too late as the old boy had passed away  :( Nothing remained and boy was I disappointed - that must have been some place to visit.


Ok this will probably be the last post for a while - no, not due to distraction but today this is current state of play
(https://lh3.googleusercontent.com/z6wtOZfTSePtNsHF167E-cRWGTaowQlqPH52GoSlCnjS3YuKLNbtU4mKjQmjbl8-IUCIivni_7kn8gBVkOtVpYS2YGcOhX8snFGJm-yJT09LTqX2aiQw4nVfnwnWQC-GZBGQe6buNbsXfwl1X9-UUq0LIcImlxIKJjNQg6Vs4RmzDanGxEByLIWA0hzVL4EY0TX0RZ-y1SLmNKbpY4ZXJZwxLwVyAKto5Ze3Hd1mXpY89IAIOv468-alg2h1e_xYmUsZhqr0sUG3h5z0jRnX-d9zQautMv06ZtY9_iLB7YoaaklwsYN3CE1PzL3VUTupqkqj6HKjUk4xxMKCcRY4oOrdV65JoxCAboWBcfvCDN7EItiO1ClsbMBw-kD2nCXIw2yGVb5sf2qETwPwNHVHjkeF5yn008PK2yhVrG0cCwqI4y4CQI4p5XV1XinMQBiPCS0rE8L-TI9A2pWNzLz-UudNlN4_AY0YqKylhZRg3QL6tTvLEYNJO76iFe5C9fSH-YBk5n1gvVhvZKMOfPHwuWc9_FieHKORJ9DQzo8xj-6VnG6indYXVm7YANP42321NNTiRb0vxvxcxVcd5D4vMi8pai3EfKlW6IOCJI9y=w1224-h918-no)

Doesn't look much for 5-1/2 months work when it's in this format  ::)
(https://lh3.googleusercontent.com/P1BUkry8bBdlMTQMnrbmTzHW82O0JLGweDt6nWC-0DdK8r4HM2-qw7WnoU4eZ9n370-CIteSCh52_48DUpB79q8c7tH5sd9H0bGLZ-Kiq6vtlHiIGVH2eSpDdVT4fk1EF3lOZuPUzIxdJ_NeHD8bhuFT6drmb5rYSiXR6Y5KtuYFkD1Lsl-WafKeeaGiBxobH2jk8jfF_TV6iKEExQ-odQSyq3QPQB0lS7o_l_1eWgLwfQVhPUJWBW22OG32T5cOMbfvGHHMhKQj1v1ScaC56otTPGKKnYhZ9xtgeDJM19CT5gvVlZ0iqtxUoaiwZuAQRntjYCqRcOiuCyT8dil0r0tKfHlIXzQyC9amtQ3KI5fCXTLf9WkqYiGmp8hXkcLCUMCvXrpZ0CysmETfYQmUG7LH58PVBc2mAhhHURR-vBWaWdZMhTBTNauUo3cSsxP9yC2FsP35HHZ0AUFLF6k-434K5mF4AspBfq9rR_DJEKfpqB_6L8c_FPf-824WnWC9yvkopMNqjEYxzMiTL3qfi1LNXbHZNHzKF_z9qv3p4n6kYicYrp6xkn7KQIgctsyjXGk7ERcX8TkwarCTHowmak8-EtNiIr68DDAOKdBH=w1224-h918-no)

I had to remove it to work underneath the base but before any of that goes back on there's a lot of painting required and that's going to have to wait until the weather warms. There are things that can be done but only small things not worth posting about so that's it for a while. Now I'm not going to do nothing while said paint dries so I'll tackle those couple of diesels alongside as things gradually get back together. Maybe more on that elsewhere.

Tha's it fer awile then - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on February 14, 2018, 12:05:06 AM
Nice family shot!  :ThumbsUp:
I know another guy who could take a lesson from you here.  ;D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 14, 2018, 07:39:58 AM
Look forward to the next stage in due coarse, can't wait to seeing it in bright red ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bluechip on February 14, 2018, 08:55:42 AM

Dave - during the eighties I used to spend a lot of time in Derbyshire - around the 'edges'. This was a long period of non ME modelling. One weekend the weather was foul so I thought I'd go up to New Mills to visit said fondly remembered emporium. Couldn't find it at first but asking around found out I was a few months too late as the old boy had passed away  :( Nothing remained and boy was I disappointed - that must have been some place to visit.


Hi Ramon

I went there on numerous occasions in the late '70's. I worked around that area often for IBM and then for the other lot after I left. Last time would have been in 1986.
Looks like they finished circa 1988.   Scroll down a bit.

http://www.model-engineer.co.uk/forums/postings.asp?th=118175

He had a lot of stuff that didn't go in the cat.  Remember sorting out the wiring for some 1/12 HP 1Ph. motors for him once.  Had a sales counter as you went in. Once he got to know your clock you got to see the other stuff  :cartwheel:

Nice bloke, had two others working for him in there IIRC.

Here's your cat ....  :D

Dave

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 14, 2018, 08:20:19 PM
still looks like a lot of progress to me Tug, even disassembled you can see a lot of work has gone into each part.

cant say i envy you the task of painting it all though, i can never get a good finish on anything - something to do with a lack of patience i think  :headscratch:

and yes it is a bit nippy out in the my workshop, have mostly been focusing on clearing it all up as i was struggling to find any workspace.  Also been trying to get a new wall built outside so i can rebuild the thing when the weather gets warmer.

ohh and now the roofs found a new place to leak  :ShakeHead:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 14, 2018, 08:41:05 PM
oh and i forgot to say that traveling steady modification looked quite handy.

just thinking out loud, if you had to run down different sized stock regularly,  could the finger? be replaced with a piece of brass with multiple holes? could just be slid down to center up the correct sized hole ?

not sure it would be worth the hassle but just an idea that popped into my head
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 15, 2018, 03:40:00 PM
Hi  Zee, Jason, thanks for looking in  :ThumbsUp: It's nice to hear from you.

It'll be a while before it's back on the base Jason but red ? now where on earth did you ever get a thought like that from  :Lol: I did think about red (yeh) but have set my mind on a pale 'Reed Green' - haven't quite made my mind up about the plinth colour as yet though. Must admit that link you gave elsewhere for Craftsman' paint came a day after I bought the paint for this - that looks to me to be traditional and high quality 'stuff'. Which particular range from them do you use?

Hi Bertie - a bit warmer today. Just been down to Bury to pick up a nice piece of cast iron but turned out the Post Code given was for most of the industrial estate and not the specific address - bugger. Didn't think I'd need any other details  ::), first company had no idea what I was talking about but were really helpful in trying to track down where I perhaps needed to go. Tried three others to no avail - still, had a really nice lunch out with Sue to make up for it.

Re the travelling steady idea. When I first dragged it out that was my first thought - to mill a slot in a piece of steel and bore that in situ to take removable inserts of differing size holes. I don't like adulterating kit but I think this has sat under the bench since my ML7 days and it's been along time since seeing the light of day. Drilling a hole through seemed to be the most expedient way of getting the job under way and to hell with the adultery  ;D

Yours has been the only response on it so have no idea how others see it but using the steady either as I have, or as you suggest, seems to me to be an advantage over having to make a dedicated tool as this way the tool point is controlled by both top and cross slide movements independent of the material guide. Whatever, yer pays yer money etc. Unless there's a lot of material to change size (I don't see that for myself) I feel this was/is a quick (and successful) way to overcome the need- even if you have to commit adultery  :o

I don't mind the painting but it does take time as well as the masking so it's not something that can be rushed - I do have loads of other bits that can be tackled though - 'while paint dries'  ;)

Good luck with the workshop - my small shed at the back of the workshop has sprung a bad roof leak that needs fixing too - just haven't had the weather have we.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 21, 2018, 10:55:28 AM
Hi guys,

With so little feed back it's hard to know where to start and end on posting - so many look in but say nothing its hard to judge what it is you look for - I mean, you did ask me to post after all but, to coin a phrase by Brian Ruppnow on the same issue, at times it seems like one is talking in to a vacuum,  :-\ - Whatever, just to put you in the picture the work beneath the base is now complete  :).

First up was to make some means of connection to the top piping that would be removable and align itself without the need for bolted flanges. Two fittings were machined from a hard brass, the first to take the air inlet pipe...
(https://lh3.googleusercontent.com/oalW_SZnqVPBSZDE_X0g5UtB7N8bciEasp0FK6i1OYBQltZTw5LJute-4Y0D1IL6wiRCTwRc24cV7gOtuDHIbP00RJ-w2n9BNm-SPEE4ph-_s0kcY9_55X4EGtUZ_FOXRotZrZEbfETzJWzYhs6pejk9-LVEaRMsJgT48TXh-YlTz2aeo4kadgdoICdfvA1M38XA5MrryhYmgQg8LOT1wfcyywiv8wOl3Xy2lHFUA8b2yBaxaHHE5JMKWaRnTsdiSIkzkmfSeE-CDP-rff_6i0B6b-bSpXO7nDOtyuGJPKLHhiZRWWl_IelpXx4NYItMXZ6vsbjOiBzKzxnVAzozr0RHG9yoh9FDNaQIthpahxOZnqvQIGHEvRgsb8N1G5Qe_QYKeNZojE8818G0syaHVjUJoLbPNNX-dK_yKlwHIWX7-jO3Nbqrn7hagXlhnu4bKlqyqEFUFFjDu7jO45tuH71eara5UaBWbDiToojSNpRtoBojFCjTz7tSU8zJ-CtE4BjviMHOLe121CTi4th0huCPNeqUy8BXS6nR4jUA0RDhv3-_pCz5B2hWbosapusOZ3hAY3iOUGjFWV-SWEnSHoGj74Z6X1A_2mp7_ka3=w1224-h918-no)

...the second to take the exhaust pipe from the HP cylinder
(https://lh3.googleusercontent.com/wqq-SnNpJx4_8AOSHb9N_7Fyn2vFgKTYqmJJzEkj6MQqY3AMFNpuFdv1rlwNEP9SQa7ZtngmpCvlzIIQdhDHHbJi9e9b2QBBndVENelKVJDOavtrv36cTmlDN9AAc-ogc9mlFDBaq6Z9HesINshhHaf9mRCZuy-oxQF8Vg7yBEbDltoEoXjbTM9UkaQ_aiV8TQZQ_Qa0FZztVDmz0AT43bcOH4-rw0Zljva4XpTwQtsLaI6pPSAswwhTNZQfRJ-9sblHj0ckL8J0VE_5T9BwIbJGtfl9Jd49FHJnVFfQUPa_Qvoe2TUweWHThwPNTkHVUR1Sw5kPveMZ0xSGRsYiEgEV775rhfCo6g3EGnoLjJ76MQeYGaFg58XsXYceZtqmM6QYsVrBxBX0bfIL_8V1yq63XU8p53emTqHHxBkilxmvI69tWKyOYRmfFSQv1wyFleW_kpefKIQ8pOhLWa8a8RjvLWsCYcMsKhfqsuf6OloYsdrWaKeprmkmP6m30ZqLZVmkGJObInVaorwJJl3gVrcaw5dg-0Kr4GV26XuJW0TYm_oN2fDeemlBB97CtEAfryFixFREbDT5-WJMjb1gcTxhBikHgxS8brYlt_2o=w1224-h918-no)

(https://lh3.googleusercontent.com/X3s6nZoJQxlYB32R2rYcyWm2-zXyyph5YqDQ-dnOoULIYVM6lGj0ESXLzVUvSBwLtElPQUSwv51zx_wnQw_rrFn-sh3o5xBUZQ2TP1xC4hwUEwHvssv_BXmVUzEfG6BEsUUfWYZIPO3J-vghD6dFkH0Vi_hFK49LL5nbtSDRHE-2P5Y1dVd5tip_AimcZg_AbPy7Ppg4EoWGl2YcgTHBKE9uBAZPHI8mU8LpZcRxwO67Ufx7-wzpczoqnl9U0ZhCbXJDiznMxx7MArzblYPVVrrBBPCjX7dhI5QQyudMfG1XwUSSlm651IP9jXNYQlDuxi1m69MovUPTPsmUe0OmTVQ10UrP6cu2N7XMyYVZdfnlDKutbvDsIRy7XOuZIgnqLV8hC_kxGckAA_J1EwgVMjbIRdJUN3G5DyVp__c8qSTqip0z0V0liZeJvxCaJbvkvVzTMzLsk3jTxlDE3tXrro7tPvig3DH4K0NUGRHyI9_IpGWtjfAkC1ZzveoJ2Wloi5eGQOpvdR_RCzkH_6aUeNRQBb_P2fDn5bzON0cuWqBisMlIplXumGviNNyQVPWHwaz13qICeZ1NmN5wnjhk5mLsQO0a-1O8Smb4pkxC=w1224-h918-no)

On the top side the connection is picked up by the inlet pipes to each cylinder using 'O'rings for sealing.
(https://lh3.googleusercontent.com/Jj57Gn-YlghVhgw9H3hB9tSKDKL-ImjSA3A53zmf4ZoOnc6sdeietT2bPj9b87KxpNqgqv-0_9ga87I-g9l1o1xoUIVVc7WztrmBLrJ9xzX9gA208E4iEalkLPZYEHC-Wxu-5h7Hz7ANUZBJg_QqC34Gfmrszrbgaw6bkL6nBgyshCD4YIRVXGCo2GIO9QVGpYVMV1rTsLa6rwvfZkjAQ6zLzI7hevX7qHDl6PVdrg1p_bA9HBY1nmjcsbWLF1Tcs5Zmg8riBtekdhcdP0Cvg8y2WIRnCsPXiqKAJz0XtW3l2k8CxSB7e32av7EzDeqkkKy_RdPuskVC0Mebzy4TVBA4mSPYeLSYVKsf1AuilhK_Er2tK-L_4s2OL5b2guLUnBUeyiIo8TY1EUhM9NfBfjAXOhNCkjh8Y2jrpwmXqkPAFSUvAmVGMsEMwtU7TSQW4Q59df4sk6f6jTr9KkEIjz4vZ48xly-rzROD7VWZL0g-vMxMOb6pFBQyLmybfqOP3j6K1D6n3mWCvYni0tcJl3Z6wIDEDf3o3fHxWTtU4AOrSECXxXJrp1KjTA13EWQz_iKfc_UrCwJlKkMagdnrb94RXRLPMXBgq-oVa80e=w1224-h918-no)

The pipework will be permanently fixed to the connectors and through to the top flanges eventually but I'm sure you can see the idea. The recesses are for pipe supports as yet to be made.
(https://lh3.googleusercontent.com/azNntzitTivtzsU2PVQlrOZR2w1NzWkYatgKxXXDAy1LSAoesvYS9qZPn5CI4S9_9LMLG3yJXMCQSjbutbTlETjFxkPdp1tEASLFVqc5LPAJQGsZMxBvCCxLJdSuXE-U1cOxwxAyJNup9JsHVv7ByR-4A2WY3tGi6GbCv4yHdnDoG8WeHrWQv8wzvkfAHylJ32Ge0NAqPECfesf4a5hTF2tdrzBuJ9IFkfbRdkWXyueGIhhbAPn6CnpVAwUnL6-rPCG8iP1EgJ6sRM3eDYua24Tfed9QmffD8fGxMA1nVXOhIB9G2cgoZle-6F_J6q8mb6SCyh9AhVHf4mKs_RI2aH1-O7fsW6v0mtUwzZcoKtW8_fJkhP507BnYsWlhj85Q6cimSGucZ0BqwEF2Du7GKh8KZgokTEiUGzzIfrAD8CxNXK_bfJqfHcHzFKw6R5tH7Ejr-WdURHT-aN7RJHH-5aKT1fuA42HL0J-h-OD6l5Uoii9kQC2govmoZsY_6inLDmMCv9xjrKa7TuRRgo7_idf7mfHxGiY87Lu6bwBLPQ_hGvElhsT3Z4SznVE8SnMxDeES1SLS8HxOWIg3G3xFKTUiK_LhnFcirqZav7M2=w1224-h918-no)


I finished it off with a nice brass plate (every model should have a nice brass plate eh) where the air will inlet, and yes I did put the slots in line but it didn't look right so changed em to 45  ;D
(https://lh3.googleusercontent.com/MFVBy-TkLc_DECHMolchZWat1N-kl_qUBDA4-AJF5pqvhIaT1VTw7yM3gPY_zs5FRnT8b_849vv7Q4rqrlySwtjuKMVDgfTsMkjTH73wwIZD37kdWJiq6CKJd3Uyw6AkQO36ZiLrVSxIFlL-yPhB_0uSPKt5A8Gw8ii_rl0pa9EpOSBtEV5tH8LJSIp1QMoQDcOgXtLV-zBr9m5SyS9q00rfTSLf0x2w8BlQnqPkeo-axt-5oZhU2NWNxJOh7G3IuV9JBrZHbpXEniZlZIUvomk653TeeqSCKA508T4BSN9O0MAZXBI4n_YYpdfrYG_edHOL3rD4nlMzSomMK1B_wyKobsJrlPzFs9GRofnovctNVqegczVn5oBnxpxIQhgynYUpMaZB81_mAEfD2Ti3cmohQ88puX2qAJkoZvxH3oF5hkmLs4d4ckkZx2CfceDsJT_ETP7mrvaxKuTiPIywfAaplnyzhML8QUaBpZyDIZnGOXgc47Zn9nQ-UUF0aE2A0ctihgH5sVvL6PL6YwP74tJsfOFBgUstM4WNp663CziXheq7L3FZOm_chj-ncTJpL_yj4G8zIbjfGVb_r0Uz-VFWkevMw2omnuJd2Qnh=w1224-h918-no)

I've been catching up doing some brass bits for my diesels and hoping this weather will break soon so I can begin painting - in the meantime - looking well ahead (should I live long enough of course  ::)) I picked this lovely piece of Meehanite up from eBay for the princely some of £18.00 - 320 diameter by 55 mm thick hopefully theres the making of my next  :o Corliss engine in there somewhere.
(https://lh3.googleusercontent.com/9Zxh-K4-GN2A1x8y7hg53GFMuB16ezqD4mYvj1Qd7VAfg9_inTR_CH6cANejAtAfbfrhZ6xNmMqJNtUQMbu25o3Omen6PqOH5IVPmkYXqD6QlTuIchSnWorU0mEE-y6hBluzMA8eIDAH2n93cndbn0ek8pXuzFzuukAxsJgTphz2sP4A6fcJOmLeO7avsThMMcDcTS3ioYLxAkzwvXBsnWMSRHa9YxUXEegF3ui9ns82sMFpH6GaDgfV5VXWEflGxEz7cWmSDFVgx1gt0sN2HNLiQy02kPx5SDlz_ouz94Zmq2vl7CL_LZOzjy1XA0mSgBCT3Yoi8exqeoQ0H_ydLaP4-OB1BfsSCcsYQgRmqyJbr5KS1ud13ZVCqF-_0fLEktZn8BLd4TPAQpm-M0HaM28guYiO1ZiJUhGphFEd9L4vul1TtHZmmbS7Cmg9FeN2yeQXFOjmX7MgksZ98VRBEx12qAeEt2npdhz58578qfWgBgJLSWPte1w1achxp4Q8VJA0lgPDKUX9QsfTjhncSW9FEddDaIIk5t35ZXwNRZMYWeSPSIQpNamcekMlIUwdljwwm5IDBJKmaDPzRYpwtKM8RerQoNvv5YjS6QR7=w1224-h918-no)

That's it for today - just about to exchange the old comfort zone for another - lunch out with three other model engineers and our wives  :) - can't be bad

Regards 'frum tha ol shid' - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on February 21, 2018, 11:17:04 AM
Hi Ramon,

I must apologise for being one of those who reads in silence,  I never miss one of your posts, there is so much to learn in each of them.  Similarly Brian's, Chris's and others.  Just amazing work all around.  A real priveledge to be able to look over your shoulder as you work.

Thank you for taking the trouble to post.

MJM460


Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on February 21, 2018, 12:57:29 PM
Hi Tug,

I like your air piping - very business like!  Not come across Meehanite before, quick google search suggests it's a high grade of cast iron - so you've bought a large lump with the intention of cutting blocks out of it for individual parts?

Best wishes,

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 21, 2018, 01:20:04 PM
Ramon, although it may seem as if you are "talking into a Vacuum" I'm sure I am not the only one sucking up all the useful info in your posts.

That slab should make a nice cylinder cover assuming your next project is 1:1 ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on February 21, 2018, 01:32:46 PM
Reading and enjoying every word Tug.

Cheers,
Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on February 21, 2018, 02:02:12 PM
Tug, the piping is the work of a true craftsman; almost to the point of being artistic. I have not seen the barbed type fittings for copper tubing: how do like them? Every attention to detail is amazing. Shoot, most of us would have left the slots wherever the screw tightened up :lolb:. Keep your cords up off the floor and watch for tripping hazards now ya hear. Y'all come see us.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 21, 2018, 03:36:12 PM
Hi Tug, looking at your chunk of Meehanite,,,,,,Have some old large diameter chunks of cast iron weights that were used to push petrol vapour through pipes to illuminate an old cottage  they have slots in them to mount on a spindle that was hoisted up the side of the house !!....anyway how can you determine what sort of cast iron you have without doing too much damage ?? angle grinding sparks ? filing ? colour  etc etc  Also where can one find drawings for "main steam valves" with perhaps a governor attachment ??  Love your work also  ....8 months to go !!
Willbert
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on February 21, 2018, 03:49:32 PM
Tug, I am still following along as well and your attention to detail is both excellent and inspiring!  Post whatever you feel like, there is something to be learned in all of it as far as I am concerned.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 22, 2018, 09:16:24 AM
'Morning guys - thanks for looking in  :ThumbsUp:

I confess at one time I used to feel a mite miffed that no one could be bothered to say anything but now I guess it's one of being mildly perplexed :-\. That said MJM 460, there's absolutely no requirement for apologies for not doing so - absolutely none whatsoever and especially so when I can see the amount of time that goes into your posting. I look in at times but confess I don't read much because it's not my forte and well beyond my old grey cells capability. I can appreciate what your input is however.

I've said it before, no doubt will again at some stage, that because I choose not to be in an active ME club I very much see this as my club and like to think that when I post I'm actually talking to someone. To sit and take an hour or more to compile a post with pics etc then and  look in the next day to find that maybe there's been a hundred plus visits without a single comment leaves me wondering at those times if I'm going wrong somewhere ::)

Said this before too - this is not about seeking praise - as I said at the start there is little benefit gained from taking the time out of a day to post other than to communicate and share with others of a direct similar interest so to hear from someone when they do respond is a real bonus. When someone says - why did you.......? or what is the reason .....? that makes posting all worthwhile to me.

 On that note ,

Simon, yes that's the intention. Meehanite is lovely material to machine and I'm hoping to get that initially into three manageable pieces with absolute minimal waste involved as it's bloody heavy as it is for sure. I have to confess at being rather chuffed at securing it for the cost  :D

Whiskey - The connectors are not barbed as in airline fittings but have just had a 45 degree tool plunged in to engage a bit more of the JB weld. Screw heads? well you jest can't win on that one ::) When I did the Wide a Wake I put some in line and was accused (in the nicest possible way) of being a 'pissy bastard' (Suffolk phrase, can be used in two contexts ;)) so when I did the rubbing strake I left them at random. "I would have thought you would have lined these slots up" came from another critical eyed but differently contexted P-B ::)

Willy - You never fail to amaze me with your tales - An old cottage - petrol vapour - sounds like a good combination for disaster

Cast iron in any form of 'old weights' is usually a very unknown quantity. It could and probably is filled with all sorts but on the other hand may not be. The only real way of finding out is to machine a bit though I'd not set to to make a part from it before trying it first to see how well it machines.

I have somewhere some info on steam valves that I can get to you but nothing with a governor attached. However the Rocking Engine that Todd was describing on here has one - I have that downloaded if that helps. Let me know

Bill - thanks as usual for you support - as they say in these parts - ''I'll jest keep on a troshin' bor''

That's it guys - now I'm orf to tha shid for a bit a fettlin' and dig out that valve info Willy

Ol Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 23, 2018, 06:30:21 PM
Hi Willy - Here's some info for you on valves.

All in Model Engineer mag.

Making Small Stop Valves by B Lundberg - June 1995

Globe Valves Made Easy by CR Fenn - Sept 1995

Steam Stop Valves by GP Quayle - Dec 1995

Seems 1995 was the year of the stop valve  ;) All these articles have drawings and dimensions

Tubal Cain did a series on Pickering Governors - 6 April 1990 onwards. Several of these feature  incorporated stop valves so might be worth investigating.

I'll bet you have the entire collection of ME squirrelled away but just in case you haven't don't forget Bill Starling at Forncett is always trying to get rid of theirs ;)
 
Hope that's useful - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on February 23, 2018, 08:18:22 PM
Boy if’n a feller could part that big ol’ round of Meehanite in two , one half sure would make a sweet lapping plate all gound up and everything  :lolb:. I was really surprised to see you use the JB Weld from the blister paks like the rest of us. I would have suspected, as a major stockholder, y’all got special tins or such  :lolb: :lolb: :lolb:. Well, you said you didn’t want praise; so you got some Whiskey on payday  :lolb: :mischief:.  How long is this paint job gonna take anyhow? 8). BTW, I showed Lou the “finger whacking video” and she said: “Bless his heart” I said what the BH , you would have told me: “see, I told you “  :thinking:

Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 23, 2018, 09:08:13 PM
Thanks tug, I have just bought 33 volumes from No1 from the estate of mr Spanswick in east Carlton  actually and i have all the ones i did not have from Bill.....Here is the big chunk of cast iron i was talking about  14' round and 1 1/2" deep if you want it !! the petrol vapour lamp system was at Wheatfen when i lived with Ted Ellis and family !!!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 23, 2018, 10:35:34 PM
Hi Tug have done some angle grinding and machining and it doesn't seem to bad ,but i am not an expert at machining cast iron myself ....here are some pics......Will take some better pics in daylight , also i have filed and polished one face up ,and there does not appear to be a hard skin on it. Also when i angle ground it there were very few bright sparks coming off it........
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 24, 2018, 08:42:33 AM
Awh shucks Whiskey, now ya let ma secret out. Those tins are fer shareholders only  :Lol:

Now were that I could slice that disc in two that really would be a bonus however intention is to cut two 'cheeses' each side and leave a nice slab in the middle that will provide  a couple of good blocks. I'm hoping I can do all this with a slitting saw set up to minimise waste  ;) The cheeses will hopefully provide the bedplate for another engine  ;)

Willy, that looks pretty homogeneous if a bit grainy. Certainly looks to have machined OK . Thanks for the offer but don't you want to keep that in reserve for yourself? - I have enough for my needs at the moment. I appreciate the thought though  :ThumbsUp:

Painting - well a bit of a paradox at present. I have, after a lifetime of dope laden atmosphere with building model aircraft,  finally become quite sensitive to cellulose fumes. As such all painting is done outdoors and brought straight into the workshop to dry. It's too cold for painting outside and too cold to disappear outside when it's drying so I'm waiting for that weather to warm a tad - Snow and even lower temps is forecast for next week so it'll be a while yet before I can get on to it and be distracted by the garden too ::)  - hence the side step to the diesels ;)

You say hello to Lou, Whiskey - tell her I appreciate the sympathy  :Lol:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 25, 2018, 01:43:01 PM
Hi Tug , I have filed one of the ends of the CI and there appears to be no hard skin on it , it polished up Roight Noice as we say in Norridge but lots of very small specks in it !! So i will keep it and possibly use it as this is the first 'explorations' i have done with it .......
Willy...
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 26, 2018, 01:39:00 PM
'Roight Noice' being the operative word Willy - that looks to be a useful bit of material for something down the line.

Had confirmation this morning - poster and entry form- that this years LowMex exhibition at Lowestoft is definitely going ahead

(https://lh3.googleusercontent.com/flVXPEsh5fZ0L-ftHISRq2bf6dRzg5xO0EM3FQT7wYD1y5VOOUBUjEXLn3JLwH_wJ6IL38EXUVdvBAbRZuD5NpHCEb3ljfIAcpbAuF4hr0U1uTBr-wo40phS-G_2A8w1JG66MobdwTEPe6em_liPlhmnvMAQjXEwLZkQjFEVwlQxAk8xLXERL_Ke3SRcJIUgariBPyeUJraGxXBxn1IwaMN9W_pjRpEqfDIEM987j543PtLbaTU6DRInEIT_j2xwhVbov9ds7lYI1d3eg6qyYsXTrGTpB3PJTExaNDH08gRbWDjo1xWapIa8jIWXZRFq6Cm95pU2-CGWW6ekfiw8feRSFx8kGE_MqWAVo--gl3Tmk-YCkGY0EZbDP-EpaemMqbWx7cKXV5gopXJfhyaKaKUID7ivZ9Hma8JAXyXygrrDXo41NeQ4ZOVwj9hLqx7UpBd9slROwUNwyD2gGLPo4m6WVAio7i_AYlcZlClJbtORC78hEODd3pDRcVbSGN2I3uWX8A6yDhKEtO2XdpQbHkb2_2xMFDqCMoeHy_RYGJ5xeB45TCC3LL_oWJmId5b2C5ezS9CD6cZ-68gsLGnM5G0OR_EsBUvY0SVLEj9l=w314-h445-no)

That's two 'do's' we'll have in the same month again  ;)

It's raw boned cold here today - only one place to be  :)

Stay Warm Willy

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 26, 2018, 03:28:55 PM
Ramon, I am just seeing that no entry sign that you had a while ago, does that mean I can't come?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 26, 2018, 04:20:46 PM
Hello Jason - I'm assuming two things here  ;)

First is that you mean by no entry sign the image is not showing? It is on my view of the Forum page - I bet that's because I opened the image from Photos as opposed to Album - it was still 'Copy Image Address' though.

Lets see if this works
(https://lh3.googleusercontent.com/GMyTZRKPD6KHBjsqJiI6Qa2D_O11Lw4TyR4Z35-PN4rFp736-f4HkwS_wB0xQLjpvWeeC1PaJpHfPW7A7GT1EyHyMPkRZ409B78ybo6uycxwXBZtb10cjIQ-ss2ae8v4l19Y5dJXQM11S5chVwRe9ohveg9SNsa7F_8fEex6VR3KM_rDItpqpTPU-m7olKBnqkZwdN-w8BGz1sCaHzBxJaiVuqOyOV3GQfKkpdCAoU36kkc6rKohQeNEIb5jaHrGKQ7kDse1QPQYDHDI38Cp-RRO9fDkkqbTB4gR9NY_-a5LoafmbuE_QYeGvZzdLfQ8w9WDDkgIdmC2nOKEU2qxF6olsVUM1Ekjj_sxChDqa9bzTqA3AqQamaoQvDrF8W60FD8S5081i6wGG-FcGTDguMYUQ9mZnBBT2mA8eFUhz6vaZTpIoBmD3StfpsQhDRXOA_SryZL_Q3AiQ4ca6TtD2I56sDHwYbyHNZpXdI7lmYHztRU-GBwO5rWSIrruDmOgFJcF2JUWuUT2ul8oJtFZXmDKnmR0Uk0EYbdujzwGaQQeYBO0P1w-n9ZorgpatAAzvJ4MESXcaJk5zPVqTMP9EJycDgn8-sW_RMyGQFjvt8fSt7iX8v_q7En4kUQwtNr2vg=w209-h296-no)

Yep - it's there in my preview.

Secondly, does that mean you'll come if we invite you  :D - now that would be great you know but I won't be counting chickens  :Lol:

Totally unbiased opinion of course but the Forncett ME day would be much more worth the travel even if it is a shorter event  ;)

Ramon
Title: Re: Tug's Corliss Tandem Compound Project
Post by: J.L. on February 26, 2018, 05:48:29 PM
Hello!

Oh my goodness, this is a wonderful thread. So much can be learned by just observing the photographs closely.

Absolutely stunning work!

John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 26, 2018, 08:41:24 PM
just seeing that lump of cast mae my back hurt!

has also just made me realise i've got some large weights sitting in a water tower somewhere, they were going to be skipped but i might have to see what they are like.

will have to wait a while though, im due to escape all this cold and snow for sunnier climes
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 27, 2018, 10:47:18 AM
Thanks for looking in JL - hope you enjoy the rest of it.

I am side tracked on 'aluminium' at the moment - nothing long term but I prefer to machine 'by material' when there's a fair bit to do so have decided to make inroads into the ali for another I/C engine while the place has ali swarf from the diesel engines everywhere ;) Hope to be back on this in a weeks time at the latest though:)

Been down the common this morning Bertie - first time in the snow. Beccles bypass had ground to a halt - but we all know that doesn't take much. Looks like we are in for more later - definitely not good for my dhalias ::) Guess it'll be a tad better where you're off too so enjoy your break  :ThumbsUp:

Tug

PS - You haven't said Jason but can you see that second post image of the LowMex poster?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on February 27, 2018, 11:35:38 AM
I can see it ok thank Ramon, so I suspect is is now there for all.

MJM460
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 27, 2018, 12:44:37 PM
i can see the poster too, so must be working.

i gave up trying to go down the bypass this morning and turned around, will try again later if it doesn't get worse.  fingers crossed they don't shut gatwick on thursday.

could really do with getting to the workshop to give it a clear up, everything id covered in grinding dust from a job i was doing at the weekend.  i really need to build me one of those powerd hacksaw's, either that or get a decent metal bandsaw.

more jobs on the list!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on February 27, 2018, 01:22:44 PM
yes the poster is showing up now Ramon
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 27, 2018, 04:20:17 PM
Thanks 'MJ', Bertie and Jason

Does that mean you are going to come and join us now Jason - there's a good Premier Inn just half a mile down the road  :D

Lot's of air so you can run all weekend if you want to as well.

Seriously - you'd be made very welcome  :ThumbsUp:

Bertie - I bought one of those 'generic' horizontal bandsaws from Axminster about three years ago. Never fails me just how well it cuts metal - not as fast as that at work of course but very consistent with a nice straight cut. Took an 8mm slice off a 63  x 75 block of ali this morning no probs. Still on the same Bi metal blade and that's been through cast, tool steel, PB and various steels as well in just the same fashion. It's been a real godsend - if it fell apart tomorrow I'd purchase another without hesitation. Might be worth considering?

Not too much done today - two long phone calls with good friends. The first called to say he thought the slots in the screws on said brass plate were 90 degrees out and should radiate from the centre  :o. See - I told you there were some 'pissy bastards' in this neck o' the woods   :lolb: Nice try Barney ;)

Tug





Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 27, 2018, 10:46:59 PM
you could always go for a chevron pattern >  > just to be different and for some added pissy comments ,  or just to please everyone and have one of each?  - / I \


ill have to keep any eye out or a sand saw, i do like the look of a  reciprocating hacksaw, but a horizontal/vertical bandsaw is probably much more useful and practical for me.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on February 27, 2018, 11:16:24 PM


Bertie - I bought one of those 'generic' horizontal bandsaws from Axminster about three years ago. Never fails me just how well it cuts metal - not as fast as that at work of course but very consistent with a nice straight cut. Took an 8mm slice off a 63  x 75 block of ali this morning no probs. Still on the same Bi metal blade and that's been through cast, tool steel, PB and various steels as well in just the same fashion. It's been a real godsend - if it fell apart tomorrow I'd purchase another without hesitation. Might be worth considering?

Hi Tug i bought mine about 25 years ago...still going strong ...but found the blade was slipping off the guide wheels....I did a mod and made a longer shaft coming off the worm wheel and put another bearing out side the top plate. There is only one bearing inside and the tension of the blade was pulling the worm wheel out of mesh.........also two feet of snow !!!!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on February 28, 2018, 09:25:00 AM
Morning Willy,

I think mine may be developing a similar tendency as I notice the blade is slowly eating its way through the back cover  :o. Nothing serious to prevent working at the moment but something that does require attention. Much too cold out the back shed for that..

Off topic I know but though we didn't get two feet but we did get more than we've had for many a year ....
(https://lh3.googleusercontent.com/ujoTDB8YYa83ILcU6ByQ-9BEpq-rb-h4CP1ljMPRP5TkZrXAUcwjROeb2SCXmK0gSFCjHiYja9t8_ZKfLLKpB3Oe2zlxweD6LnSA_SROEi4K4gru37eK3bGg2KyoaZNfPIYt3t_m8_2AXEro1eXeDqK8xlkn_ihYLV7f0eJVqzEc5zB8NMEMIw8oxTw2RIPtLPwCcbyZm3K_DScomE3smq02-yX2OCmdSzl8OVOuoXT3Qdt57EXRN-T7zKqekg77IAuip1IbxUEDVMniZU8l6roQd2StsvKg2XdSibGvSpKIqzIhZF2hQ_pca4S9U0JEGefdlGwJpqunyJuE27pdcHwaiELmnkNXIHIrrmxWb9DblNJpL1gtYg8zVK2-i1qg2D2su0bzpj2QOcaObce9OFWN0XU3WPi3SbgclHKS8-Pu_AzhHFPwT38-cOLFwpT8X2aMNfVk-dkjnXIRUeFVIyehPju-3k398q5CiEI29GDnaLo9py20qwhL736wLGv9pNHONn7QtYFo1DqpCJhHoS-1_5l0O1TpRIfkwbdunUk_tIRIhelzrWnf4IQW7UUEeAMdFIWseNEEEEeL3gQ93KtkA2QYleHR_oKAXKUo=w1176-h882-no)

and it's a long time since the car saw this much too
(https://lh3.googleusercontent.com/h2EFiXHw72upnR70_NoYA_Tse2Dht1PfToqOmm3jbFrApD06GrO7vse01rnnoFk_GdVzv9fTaKgE8KLo1F2x3Ef8zc1t1HkU0tYI7C75BZ-VQkmEdTBnLG3mSwYw6FsYzkgyMsQAfJ36yQnj5WH_knkf7aSHY-y8NnxDlgf1igwkYQZmjX29TX_Ex5E-7T01BMPHQevmjtXHOy2yoh43J9EU0rTw-49iKEJBhKmhnNA5Yq1yEUa284UPAJBGg6OcdMIsSgPhnTLCpoO_u6rCbjnNcGLRNyrwnV1cznW-Cv4sGVWXMQZMyFGaeTjJAWNQIMI9-KjAR5thi73QbcUlktswiOdMFOuOqM0FuE_mw05J_rpjjIdFCrKdVk7duMBriIHL_rR0SCQBmUxlUqHi93BbjKKIHKgIGAdcgipBHP8zbcXQIWGtZQ2pmj-EHC5TOQ1NGXXIXOo7rRx9ANoll0KujH4DqOv8M-sS86gwIqETyMFDiShlyEUq8gznMoDxDDwvyP2pNERfONVug_xitZP7aUla5splpCKGbWdtpQircvcw1WlR0BElHs432kKuqO5K1GgxUz8khiCgRFlG0VWJQleuSiCZIiPCQq6k=w1176-h882-no)

Met office give 5C on Sunday so it should all be gone by then -I hope so as I should be going to Peterborough for a model show.

Bertie - hope it all goes well for you tomorrow and you get away on your break okay.

I'm off to do some screw cutting - hope those heaters have lived up to expectation overnight

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on February 28, 2018, 01:56:25 PM
thank Tug, im sure ill get out one way or another!

enjoy the screw cutting, once iv got all my change gears made ill have to see if i can remember how its done.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 01, 2018, 05:30:17 PM
Hope you got away Bertie - enjoy the sun (and the warmth)

Today has not been a good one!

First off I tried the fan heater on the compressor to thin the oil. While waiting for it to warm began turning only to blow the fuse again. To be fair I was overloaded  :zap:

Come in to replace fuse. "Tug" - 'There's water coming through the patio :o - 'Bugger'  For a few days the bathroom sink has had a slight gurgle - I knew the cause, just didn't think it would manifest itself so quickly.

Phone Water company - accepted as (I quote) 'Emergency Commitment' but, due to weather conditions affecting everything can't come until Tuesday - WHATTTTT  :o

Waste goes to sump under patio slabs - from there to another sump on neighbours property and from there about 40 ft to main drain at foot of my drive.

Previously I had a neighbour with drain rods and means (and strength) to lift the heavy (very) cast iron cover. He moved last year!

All other neighbours to old - yep  - so had to call on a mate - enter Sue (should be 'Super Sue' guys) With guile, a pry bar and two screwdrivers we manage to get said cover out of deep recess and expose first problem - no details , use your imagination. Go to mid sump on neighbours and expose second problem (definitely no details)

Bear in mind wind is getting up with snow all round when another neighbour - much too old to help physically, brings out an unused  set of rods. He deals in old tools at car boot sales just happened to have bought them recently.

So - workshop time is on hold and spent rodding and K'Archering a 40 foot long drain with an intrusion in it - felt like a brick and obvious cause of said malaise. Two hours later the two of us cleared away in triumph if not a bit smelly and totally bloody freezing.

Showered again and had an early nap - now I'm off to see if I can finish that bit of turning. Oh yes - I did get a full tank of air in the end  ;D

Happy days eh, ah tomorrow is another day  :D.

Hope you don't mind the diversion - lifes like that  :Lol:

From the ol shid - Ol Tug

PS I've heard comments good and bad about K'Archers. Well I can only say that even with the rods, without that today I really would have struggled. An amazing tool that really does the job.

PPS Good news ? - Bought a good set of rods -'only used the once'  ;) - from my neighbour :D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on March 01, 2018, 05:56:29 PM

PPS Good news ? - Bought a good set of rods -'only used the once'  ;) - from my neighbour :D

Trust you to come up smelling of roses ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on March 01, 2018, 08:54:47 PM
Why do those kind of jobs always occur in the worst kind of weather :toilet_claw:

Glad you got it sorted.

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on March 01, 2018, 09:08:43 PM
Hi Ramon,
 I’m another who reads regularly but on comments occasionally.
Maybe the vacuum of responses is caused as we are all sucking up all the hints & tips & LOTS of other useful information.... :lolb:

The engine is coming on very nicely, like your air fittings, it’s in the coming in useful file. Nice score on the “ only used once rods”.......now you have them what’s the chance you will need them again...... :naughty:

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on March 01, 2018, 11:56:15 PM
Tug, as us “old boys” say: if’n it ain’t one damn thing it’s another. Been there with the septic (sewer) thingy. We’ve had one of the wettest Februarys on record and the ground is having a great bit of trouble absorbing any extra. At me ol’ hoose, it plain stinks outside and at the business, which is also on a “tank and trunk line” system, catering to a couple thousand a day, it’s consuming near 6 acres for drainage and right now, that’s overburdened. It’s got to be from all the greenhouse emissions we model engineers are producing  :lolb: :lolb:. Snow: remember; don’t eat the yellow snow  :lolb: :lolb: :cheers:. Y’all come see us now you hear

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on March 02, 2018, 12:13:13 AM
Even the diversions are interesting Tug. I missed a day or two, but am caught back up again now ;)

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on March 02, 2018, 12:58:02 AM
Wow, not a fun day, glad that you got it sorted.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 02, 2018, 08:31:53 AM
Morning guys - yeps life little diversions can bring you some pleasant :o  surprises at times  :Lol: but hell, Whiskey - I'm real glad we didn't have to deal with yours though  :ROFL:

As you've seen I've had a slight diversion into those couple of diesels - the progress of which has surprised me as they only need a couple of bits left. While the 'shop has ali swarf all over it I've taken the opportunity to rough out the ali its for 'Jefs engine' too but I will be back on this project next week.

Thanks for looking in and if you're surround by the white stuff - stay warm, stay safe or, as they'd say in these parts

'Dew yew loook arter yersel bor'

Regards from Snowy Suffolk - Ol' Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 03, 2018, 10:53:57 AM
Guess who turned up yesterday morning - emergency drain clearing crew  :Lol: Too late, I said me an the missus have cleared it - should have seen the look on their faces  ;D To be fair I had phoned and explained so they knew it was dealt with but they'd come to make sure everything was alright. Diagnosis is a cracked and misaligned pipe to be dealt with later.

Made some good inroad on these ali bits only to come out of the workshop to find another 2-3 inches of the white stuff. Looks like it should be the last though so cleared it all again this morning - it was already beginning to thaw thank goodness.

The model show at Peterborough has been cancelled however so I'll make use of that to finish this ali and get back on the engine on Monday  :)

Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on March 03, 2018, 12:47:09 PM
That is s shame about the model show being cancelled. Seems from what you folks in the UK are saying the number of shows is dwindling as well. At least it will give you more shop time though assuming you don't have to deal with the white stuff!!

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: J.L. on March 03, 2018, 01:37:53 PM
Hi Guys,

It looks as though you have had a go with a bit of snow. As you all know, I live in Peterborough on the other side of the pond and also live with snow!

Love this thread Tug.

Cheers...John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 12, 2018, 09:55:38 AM
Morning guys - Wheres that week gone?

Bill, the model show was a 'plastic' one but unlike the apparent diminishing of ME ones they seem to go from strength to strength. Very frequent, always well attended by exhibitor and visitor alike the hobby is flourishing. The sad part is all that organisation for what is a very good show having to be cancelled at the last minute - must be gut wrenchingly disappointing for the guys who have spent so long putting it together.

John - Living in 'your' Peterborough I can well appreciate how well you are used to snow. I lived in Newfoundland for a time and saw a 'fair bit' of it there  ;). When we do have a good fall here though it bemuses me how, as a nation, we seem so surprised by the effect it has. As a newly trained soldier in Jan 1963 the first place I went overseas to was for further training at Fort Churchill in Manitoba - now that was snow  :o

Well - things are back on course on this project. The ali swarf has been cleared but it was worth the effort to make a bit more before doing so as the major machining on the main ali parts for Jefs petrol engine have been done so it was worth the digression :)
(https://lh3.googleusercontent.com/jGWuDwldTqHE6ZdjtiFbcSCdAqZGzFrEI_1A0lCMbxM6LrSxsy2t5sr8sPi7uEAkFwki5V3s26fCcc5dF1XfdpKL-Jk63m1k6OlJBuRERCWQHRGgWAte4L_Qiav-m5HnB5cPp2Sv_qvCA5IMqPpAgfGg-3U5YnkdJL9a-eqgrjAw1A1Z07QLENlDvYusYdBLslYhR2yrKlc7L5qze5sQPANxxFR6fGsJ99jLEOFeINn_nrdgyTMigrhLdZEWhANk0w9Q2CCBlaG4IK5n72n3vXxYkApm3UzT_yEdnHsoyDiTCynoh8kxSY7dIoLXnFiJ-bFxJILP3mHe837HYa_tjnkCxn-BxrTVbD-WIut2vFEC8JEUokNFzzmgl92gz5yCjR3Q6HB5m1lsUqFX7JONUuNsnI7lbpG6mfRdD0XzWLtLtxkpiLjOGKz7bEohC0IZ0CGxZXff-E60E4Es6WvbgOuY5IWgzcSRIikmVW-fnbRbDTrZNXI7uMIkNr2j9oOxB6gqXBsIWJp60aERpwuXd2bD0AjpzgIIdLJSSPneOokK_fke8vwez-7nf1cWSmbnE0uUvkGaAvBbbYsOiPDdZnQjjObFN4vhUoslIy5t=w1224-h918-no)

These have been boxed and stored for a later date and attention returned to the Corliss.

First up was to deal with something that was overlooked when machining the bedplate - the mounts for the handrail stanchions. The base was drilled and small pads turned and JB'd in place. The pads were reamed and the stanchions will eventually be Loctited in place 
(https://lh3.googleusercontent.com/Kk1-o2lWxLNC3TGa_9V5HE9KKPsCWM71Hnki6b-QDJ5h76ePOjv_wWviQWmSP0u5z-5GygDe-gns06qxqo74FIoJqAg6ChwRqVNdgBBv1-Cw3dYaYByNH3VXwhQpEGykHUXPqAM_WINnRb_ScWWNMM4Pt8kl3NvdpXqpXP4b8wdielBnxWSdevC4RWo-ZMKOQClgmduVAErx0wf0k3eEjj9sYi4WqpBtsw5Sk-W2vzW9nB58rfPa6dhA44nfONLVo4KhQB1x5Yy02U0w1LU8gkr2j_62NtVeWCHjlMEl4M4bhxmm_1sAQ0frGtv3rF0WJyTp20gGgGpSfF3vieTQ5H1H9tB9zFxUwROf0o3JzerF8_nPlZ8xvMjU6Ciw303IfBATtXZ053ZoxEGTNdlxMBaSzvwzYcgPwyIUi2DoMzAD-mKT23YSBZTp5w3y_5sc0HWIQ_NUXRx8H2Fjy9y1mdiH_uV8s-D5u_ZpyKjCyZP_tGESgoq5B9ihiI88IGNLV_F-gGo40orrsDjhGKiFRW0qZSZse9LnvGeVzbaWRsYvCdOqTZysXs-mtNqR6LHNXPIYLBGn1TMwfCRydYWL8BtJOgUHmioNHSwJ5_B1=w1224-h918-no)

One of the things that has been bugging me is the drain valve situation - there are drain valves shown on the drawings but shown only for the slide valve cylinder - I cannot see anything relevant to the Corliss cylinders.

Though this will only run on air there is always the possibility that oil could build up and hydraulic. Having studied every pic of stationary engines of the type in several books of George Watkins I can find little evidence of noticeable drain valves on Corliss engines per se. There are a few that have pipework with quarter turn valves but having spent sometime drawing one out as small as possible it would still look over-scale. However, there are quite a few that show pipe work coming from the sides of cylinders and disappearing into the foundation, possibly to finish at an isolated valve somewhere. That is what I have decided to emulate.

The cylinders were drilled through about 4mm in from each end the hole ending about 2mm deep in the end cover. The covers then had a channel milled to connect the hole to the cylinder. (They are offset from the centre line so as to miss the lower, centrally located, stud)
(https://lh3.googleusercontent.com/YmeP3bCo4qSEz9A4V1dg8rEOV-mrOgq1XRp1OAhhQc-ZF-QmYiRWBp5G4UzGfwQHcoj0DF_a54VsRu8w9GXPn1QCUDN3VhQT5MI-jTqfPiu-_IVIrQAmnrwmMU7TbVNNCNVJvsEgp4dPbO7xUOrU5jGVLNKglkwjMOxJTD40Uwm5mvA0Ten0FS6n2-FxGun4oQItZzhGl9H1kb_6Z51UEeAnsZ40YUkfmtf0IYeUMI9o5-UdO7NLCNBSaaoIgcC_wGg8fujyvQrwJdmC80VlpNWqjFkFSxk4mYVIELIPgAdZJYq6xyTI_7Ctwlv03ZLFJ_-P99tjc4bNPRkTtNdmYsArjaItaYATkrhFy-bConYkt-jducWzGYukIE3ZQNgPXTfbPNLIV35NfTUMdO887Np0khyW4JU7s_JYlvfZ6x7Yd3UVgHnkmdbSb4O1BMq7jo0ZmzQDpmhBA9y9UFe5VnkKd-hIVmkJYNhKU8Ini4Iqtcgo1fb9ttblzcm0Yw_dtXYI6cF3Wb9MjL9O2q1a035yeui1-CO-1kNNz1C-rMlIwKpgsS4jWBeNAXafzmOcnoGHlVkRK3eCw5wA8T7x1vcBtkvdvEzepeg3OP4h=w1224-h918-no)

The hole positions were transferred to the bed-plate using hardened pins in the holes and these centres picked up and drilled on the mill. A recess was milled for O rings to act as a seal. Holes were drilled from the side to intersect and counter-bored to take tapped bosses JB'd into place
(https://lh3.googleusercontent.com/zloDWuSXkp9N5c1E4xVGWFmqiEXdUSIGiR_UWbHNXDS_S-7gldnoWi8--NGUWpxNwb5fpoBdq3ST00dIejhuj3P_qF-qjHmm3A_JWyMECmE-saHAduG8luhSKKbGIFDKde7its3o-S0R09hMQxsVErlUAt0BBWfcE1CUJHzLUAYbHxXcOtM3bQLh22bwoLITNiYq1oL9bEMA9EJxhvM65YuYaqXxH-6pdTXiYJmuuhiKbZBsopZt2MVJVbhpr8wp5-b9EU6bLJAWftt6INUvtM6SKl1TM0wTi_xg5JLbAnkiRQVxm5uUbvPfPehLF0CJeusYnR8R-Tm13ZcGN4JPjUSShTuc-HDcycoCRy0Lr4yqXopTZv7FXy0aC4wUHtdEeQfDD3MjijbGGR5xuMfktRQp3KlqIlKi8iLi9SnxtKqBWpVZlj8M26xLmEFObPT4XTkQS0DbG7DascSgLENWzXP6-ulx3v3m3dEOhipWvM2lCsqeqU9uOElxPYFM4gm3EzABfOpuTJUUqs6Eq9QEGbCu_O_mxJtwFN5TgAlVetMknRdLb2yGQ6eYFRBPAxUAB5fkHdWq81I_0N2wgXpY4Tkjytzpl4pikqSKa_ct=w1224-h918-no)


That doesn't seem like much for a weeks attention but a lot of it was spent making my mind up how best to go about it. The pipework coming from the cylinders will go through the base top and from there will be connected to a point on the exhaust pipe after the Condenser outlet. I'm working on that now so more pics a bit later.

The weather is still not conducive to painting outside but I did manage to get some on the outer pedestal yesterday as a test.  I can't say I'm over enamoured with the colour - it is decidedly different to the label  :-\

Tha's it frum the ol shid fer now bors


Regards for now - Ol' Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on March 13, 2018, 04:07:05 PM
Hi Tug, is your boat called Wide  Wake because you can 'Roll out the carpet' with it as it goes so fast ??  !!!
Just wondering ?!!!!
wily
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 13, 2018, 06:42:46 PM
Hell Willy I don't know - I'm half a sleep most of the time  :Lol: besides you're on the wrong thread :Jester:

Funny you should mention WaW - had a phone call from the Halesworth MES Chairman this afternoon asking if I will take it along to do a talk same as the one at the Norwich club - news travels fast about here eh? ;D

Still working on the drain pipework but had an nice distraction today and a blast from the past. A good friend brought one of my old control line stunt models back to pass on to another. Haven't seen it since the late nineties I guess - still in good nick though a bit of hangar rash here and there but otherwise ready to go. Not one spark of inspiration on that front I'm pleased to say - I don't think that's for me anymore.

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on March 13, 2018, 07:10:50 PM
well sounds like you have been very busy to me!

glad you got everything sorted in the snow, and equally glad it was all gone when i got back early saturday morning :)

will take me a while to catch up but thought i would say pop my head in to say hello.

keep up the good work

jon
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on March 13, 2018, 11:22:19 PM
Tug, cheers. On the weather subject: some call it “global warming”, I just say that the old ball is changing like it’s always done. What us old country boys used to go out in with 2wd pickups, drink beer, and play in; now shuts down cities  :lolb:. On the engine subject: go ahead, just go ahead and rub those diesels under my nose. I know what you are doing  :lolb:. TBH, doesn’t matter what you are building; I’m following  :cheers:.

Whiskey

PS: Lou said “like one of gentlemen on the Downton”  ;) 8)
PM received, reply forthcoming
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 14, 2018, 08:41:15 AM
Morning guys - there's this strange bright light coming through the window and I can feel the heat on my back - yep the Sun's out at last  :) 

It's been a pretty miserable couple of weeks weather wise Whiskey and the temp is due to drop with possibility of more white stuff at the weekend though I guess it won't be much - today though just has to be a garden one   

The diesels are but a mere diversion - nice to think they might provoke something similar though  ;D

Glad to see back Bertie - hope you had a good break and plenty of the sunny stuff too 

After yesterdays pleasant interlude I got to grips with the parts for a valve to fit into the exhaust system - silver soldered them up before dinner and left to pickle. Upon checking it later the valve part had canted so reheated it but I'm afraid it went from bad to worse and I totally buggered it ::) In the bin it went then  :(  A restart is in order but it won't be today due to this lovely weather. Might try to get some paint on though ;)

Back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on March 14, 2018, 11:11:53 AM
Hi Ramon.  Still following along.

Had to go in the dictionary to see what "canted" means. :facepalm2:

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on March 14, 2018, 12:23:48 PM
Vince

It’s very similar to “skew wift “


Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on March 14, 2018, 01:20:13 PM
Had to consult the dictionary for the second time today.

Shouldn't it be "skew wiff"?

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 14, 2018, 01:26:57 PM
Hello Vince - thanks for looking in  :ThumbsUp: Looking forwards to your next project  ;)

'Skew-wiff' it is indeed Vince but near enough Stuart  ;) - or rather, as they say in these parts, 'Sloightly on tha huh'.

Collected yet another one tonne bag (and thank fully the last) of the remnants of the leaves. We've never had such an amount for composting as this year. Lots of lovely leaf mould  in a year or so though.

John collected his aircraft with a suggestion that I should fly it at the Lowmex show - hmmm not too sure that would be a good idea  ::)

Hopefully will find time to get to grips with some more brass a bit later

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on March 14, 2018, 06:33:25 PM
Organic modeling  :lolb: :lolb:

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 15, 2018, 10:59:20 PM
Hell Whiskey - I'm sure glad you know how to spell  :ROFL:

Valve number two proves successful but the set up not quite finished so a couple of pics a bit later. Doesn't look like I'm going to get much workshop time till Monday - duty calls - domestic interference  ::) and a family day on Sunday, our Ruby wedding anniversary  :) Now wheres that forty years gone!


Fr'm tha ol shid - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on March 15, 2018, 11:21:43 PM
Congrats on the anniversary Tug.  :ThumbsUp:

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on March 16, 2018, 04:49:12 AM
Hi Tug,
 The engine is coming along very nicely. Neat setups & lots of helpful ideas!

Congrats on the Ruby anniversary!

Only a couple of years behind you yesterday.

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on March 16, 2018, 07:57:09 AM
Forty years - congratulations and best wishes to you and Sue!

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on March 16, 2018, 03:02:40 PM
Hi Tug ......congratulations etc etc ...saw this and thought of you......This is in my old Marshalls cat about 1915 !!!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on March 16, 2018, 07:17:59 PM
congratulations on the 40th wedding anniversary, hope you both enjoy the day and that the weather holds for you all
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 16, 2018, 10:48:32 PM
Hi guys - thanks for all those good wishes - these things kinda sneak up on you don't they  ::)

Willy - now wouldn't that be great if we could take a wander through that page. Is that an original catalogue or a reprint? If it's the latter any idea where I might get one. I have a few - Bellis's, Mumford's and E.S. Hindley's. All reprints and bought at Forncett and other museums.


Here's a couple of pics as promised. Apart from the actual linking up of all the underneath pipework once the cylinders are in place there's no more work underneath to do.

The drain shut off valve is directly into the exhaust leading from the condensor. The valve is operated from the outside via the coupling. The cheese head screw does nothing save fill a hole. The hole was drilled right through  :facepalm:
(https://lh3.googleusercontent.com/HfXOPw6Z4gqPGHNb3-urtFCb_9LnJqirEPK7N0UlpHBGKej-ZRUA-aste_UflSODSULAvkCZMazsUJ9O0F7WvQUwAPlx2ej7n7LvuAKjRGyi9OiNpSV5zl8Z5lZXP_9w3r-44WSgFGYH9gqoxbyICdIlTplupyRHCVHklOXRCx_cd6fGhMx3_cZ9oZJtmI1NCYuhNxf2Hx8sHnbvr-NhEQyIgerjnSanh2aKf20u3y93NCk5EFXMDUwTceIBIuke6BifeF7eSajqVukJ7hUUu-mJ92nrQ6JbkuC-c8crs8kTIqr2is6asAUKkXP9L6YZ9BWoPF6e1JwQhuAeFfjwpVXYZ56GL847LaSzjufMsigs3SZL9rrnBUw35yy7uApJxQf-zoV_LRTpTHF-Ow-fsB50_CetA-ztJAEUG86lNv6jPU7hH0ksK8kKPW9JvlTXh6O4o2RFaSBqYn34DWLOC4Cw_hRx-XSBna-_WuobkJM9KeQnq6u3th9j905NTzJ0V3xUu5DXtHJL7OIKhSHMm33e-vK_NPOpdHe5ro7K5mKxeaZDFrjWQ-IEVRFLZU_vl9uHI12qOubUOW86kcIGumhEtuvpr6nmnIiCo6oh=w1224-h918-no)


The four pipes from the bedplate come through the base and will connect to the manifold using flexible pipe.  Hard plumbing was out as I did not want large holes in the base on the topside in order to get pipe unions through.
(https://lh3.googleusercontent.com/hbCrnw10eZqHjMriX2wKfi8b5SWH6_Jd5vcWvWtWFhSNykDhaXDvm4azviPi6n5AYl5ScTNX5tlOVhfCPEtoUjlKu3qrxBsO1dOteo9gamJa6HhHsBmXYHoxX9j-Mkzx9vNRp1GtiE6rXQhd2PcP8ZDEUYpeegiv6ZhFXA--yCqnyOq7xT1iFVn6csKRJNdnVaxrlJgKGQUMrt79hUjWmRTmQnd3u9eyo_VQWL7wE_YzwtEjdZiygNcMDI2EeXe626Sy1Ap6FED6OMQDu-LOC6e17VprgVHxXUFHouht_I2PhStfdD-SLBJjFW2ZagoADtuxjmXS4-WJMszFq_Nz80y_xkZf6QrVbfL2WTWLfgucvCIwL5xMgna9J9Ll-9ovPKdYwQ7qNCQfXVQELjOAZEEjjYnxgMNVlyxGPVESo6fQy1IwG_-PJgIk1m3dfPSgZbLQ_jnWYKe6HE_TgL8gFfTxpFwMveEu2KvmyrOJ8QMMGFs_SBGrEwvfOd8eZ2_tu1BZXZuG11F3rd_GfRJatGJ0lVmezUqr9oFviccUD23DJai5LzUEDjuNswj2V_1x8INiXN1m92igqn7LOItyylEzPvkGhrPiaVjHb1cq=w1224-h918-no)

Once every thing is installed topside the pipework will be fitted/sealed using JBW
(https://lh3.googleusercontent.com/n1Q_q_84Hjsqgi9MZgT-giiuZsIeF_Rv1xzYP9s7ePbfXwznQgSi2XiAdvRhSUz0cOH8OI9d7xiSZWJpiz-qwrTzfQzNT8TZrDShYCWxOiTrIZ8bR5wKVm89irjbNxvXqDE93DnqesV_WjcdA7t0E0v9s0IR1R6YummIuc-Vg7tTHbXzmWxEtIahwVHDvZRpItzJ7bvaUzwJ46y4agyClQGb5jQXkNSCDwZ9MJirHg4V_dv9JK_p4pbwD_pTGUpWf1f-oUQdCIyBB64GOc0s5JWdriyIWlbaPF7sgQWw4OxFKFpaN2zJOndIhZ77CWVXzpgAOe6wUMRi8T3P7xo4PMQkN7F89gVHW4hnt2WmDdVwTytBAtT_cEy-t6CM6ate73_T9a7c9AuvYNDug25XSvBwhSLMSdpIAlCwS8QeHQxbrEiYg_7FdLc0bK91784yBrPRP2Q8kiVOAVzjR4b_pB1J8N3BR-VuwbKGmH9BdP7KjHf3GsizAgKiS3SK46R23_W9HkSYA1w-5NncfdRrMcBGoWirtULh4I-pEsVJx6GFNDbJCBkktKq3Nb3a4ka1HyKQT9y3jdylV2gT0jNauY6S4V8CaEbRBZ-uuuec=w1224-h918-no)

The valve will be operated using a screwdriver/key.
(https://lh3.googleusercontent.com/3JXw4yz_c-uXBSZNhJBVqMjTROHRFwlrpqYbJuZ5nKeNmY5IaP253OpeLsn0ggE32gZiEfnfN_f38jAZyvt7jMnapoqEPr5Yi6PuMBbXCByZljLbXaJDLggQIC0kg2wGrZGh3vQbrNtgLve2UmJoR0GEUSg6kd5GYajzWowuAHxGlUoXBx4TJfjDwR5HjsmZDK3OQgU_6J9i_dUb-wDznGDh9yrN-ERrD9RLpCyPWJbtxq_7NaYz9Qrm3YRyTTyxfYUyTkcJCqJXxVuswY1XJuCo4kxl8jfCgwX4u1Mhu0JaHRRTRHIjC5Yna0_FW7hVp-1JSkbGkGLcvrJBAoxRqIIL1QZoh_VWJfxv4jW_7B08TtPZuEF3r6BK2BbMxUfAimWsI6uipT9UuHo72-a-D2Ms--MeAwWeVlMWBf8W_lKYDCPNcu5T5qjwgLh7OrZ2MLbNUii7wLwR9KRu7BiIDFjG1cSFhftWLBScfeKlEx1Yl6MofXv60xZ8cAWgo6vFJYA--ZKEgohVtLK97LssKl_CSEhzmpOfYhoSiaxad4SaodvpcJSbTe7vbsmvyd12CCsKF19kkR69mWgLlqjN-4XV3hwS6VSNqCwDUvhD=w1224-h918-no)

And yes Whiskey there was finally a dry spot for time to get some primer on ;)
(https://lh3.googleusercontent.com/jNDHVEmNQHBrHmMVRDr9_SZKZiy-o1vwgjOGFznQQLvNhHva9H7dTnfObLjvOxEvmQCtkGH4y0Rh472aRHzTrvFII2oKT8KiCwS_XGY-OscVZeSngjK2hrjyNo4HPElLWxXjg5bWOMt0kSfnFlCQbKF1Fvpn9sHJYCSr4HN7O1tmu-gBtYIp5gh6ROK_aVSPpvP9_zrkJdxKsyAq2QW_h1YIxKpYRaM0E0kju_yFHPlbCRE-lj8GGliLHlk2bCKEJtsLbiG_95fuYc9K5RTwsearSzaZ_sF7_kqJCSrzfG6JHy34g4_xbtBruHsTOt4Stp2F5Vpf_gcihJ5Cjx_gkCa5729e5jgBH4YKvfNgFmOvjylLYZiALKV3iA9aCAxShPYSZQP51vkvZS70z0qZLBzwTXoPQtumlKR0YuNIL4kwe1eK9XMveFq6ehhDN3y4MJyu0-TG5zxp-YS8QgKfcaSUnolL4IYBniHjRVWONrDbPlNlj5CXpBc54Y1_K9JrPJQzg3Zw-ZdLdijdwKEUkh3TIS-cnu2cy2GEWCiF3atJAa5eAe4UdbtoUFJJ5HBoT88KaDT_FYtd1DjN651tHmUwC1OdUMMU1H8uYbf1=w1224-h918-no)

That doesn't seem much for the input which has seemed to go on and on. Last couple of days was definitely one forward and three back kind of situation but now at least the engine can begin to be put together as a final assembly.

No chance now of anything for the rest of the weekend so y'all have a good one as someone might say as I certainly will  :cheers:

Regards - Tug

PS Whiskey - PM read - will comeback to you after the weekend :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on March 17, 2018, 01:06:36 AM
Hi Tug, yes it is original from Barnards Ltd Drawing office Norwich !! Oh and i like the way the screws slots are arranged , and i have just learnt that you can hold a hexagon bar concentric in a SC 4 jaw chuck.....I wish someone had told me 60 years ago !!! Also when the Marshall cat came out coal was 10 shillings a ton !!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on March 17, 2018, 08:50:06 AM
Looking Good  :ThumbsUp:....and I love that shot of the workshop.     Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on March 17, 2018, 09:22:04 AM
That looks a nice shade of green, can't wait to see it on the rest of the engine.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: J.L. on March 20, 2018, 08:00:48 PM
Hi Tug,
That wooden base is superb. The clean, brass bosses really look nice as does the entire layout.

This is a wonderful build.

John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 21, 2018, 08:15:19 AM
Morning guys, thanks for looking in.


Willy - maybe you could bring that catalogue to Forncett if you wouldn't mind - I'd love to have a look at it. I too have only recently seen how to hold hex in a SC 4 jaw - I think it was a post on here somewhere. Works a treat as I used the idea several times on the brass bits just done.
'Ten shillings a ton' - Ha! I went to post a letter the other day - second class. Gave the woman a pound and didn't even get 'ten shillings worth' of change  :o - Inflation eh ::)

Jason - Finally managed to get some paint on the cast parts yesterday - no pics as I want to get the masking off first. I'm still not too sure about the shade of green but it is growing on me  :)

Thanks for your comments John - the feeling is entirely mutual as I'm really enjoying what you are doing too  :ThumbsUp:

Will try to get some pics later but I'm off out this morning with probably garden later.

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Gas_mantle on March 21, 2018, 12:36:18 PM
Looking fantastic, the base itself is a work of art  :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 26, 2018, 09:43:09 AM
Morning Guys  :)

Thanks for looking in Peter, glad you're liking it  :ThumbsUp:

Well at last there's a decent amount of paint on and rebuilding can begin. A slight interlude over the weekend when a phone call on Friday informed that Sunday was the only opportunity to get the Wide a Wake's boiler tested  :o I didn't expect that to come round quite so soon.

Anyway it was nice to get it out of storage and give it a clean and prep it for the test. It passed without a hitch and I did actually sail it for a bit - even took a bit of video so maybe put that up later.

Here it is on the bench after cleaning up and somewhat dwarfing the Corliss
(https://lh3.googleusercontent.com/qwXrWbEHj9J2tKQ_ganXIf82czHocLYjQkIhDB6eXWfaL9rCM43C5H_q-oyfZl5PLx6bvkN0VDotmVPekReZ6BECEXCmE4c-d1aW_omYvLl4Thbu03biJ3v45KuP6znGM2LjPToBsgaX78SzqYIbWLgOPpFZoRDtPHxElFhawNBJ4aez_VsS7g7GPK06efpO58t3XgmNClm1AccaoMrCPfhDfH-ebOzgorSnxdz2cZ3K6X6DMG1vJPyG4jEJFturovNbo3cA5k7lUKYJbCg6iq86X0MQtVidr37XAuQ7WxbbZKjELHd_hdR-SwIrgDZVdLjtBqJBVG0cp9jGDmrmFEFL7OJjqUbuGGEkwCvvZIaP2bPx2wx2ZRsSfWWTf_4OY8plosIoqZbTTBanMXMmQp_6j7SB-F7FJTtnyaidntNVz6wCs9yOdgkIJH5HVxjBzJdWvXLY0O_XaemE4n6gJITs2WvCsFfc95yzfn9eyj6-XlwiA0E6nyqIRnJSNtkD7rj2r1pjUBCnuRl52a-UEhVu5AIsYp5UDrnGJ4MPRrzm3Y3VM0YrCA5hjzuaaSFUjAET68GOaJdT9sAVhtkAUsuf0Q4JlDcg7zgfvHmG=w1224-h918-no)

The green is growing on me - I'm beginning to like it and think it will improve in appearance as the steel parts get added.
(https://lh3.googleusercontent.com/BRkHzIrBYPqLuqLELYFw_pHXrpia3eR4dOBDJWkDkknTLw-Ei_7ffR2xTndfj5_8fuSUZReCbw3t-GiSg3LlW4q_RXj7VyzVAaa95eDXDvD-YTUJLCDSwLoL6zxNAVH3Lze8mU0SXZxKcUoWJaSNa07R5vbdmO1h_hx8EaFbMMJA36bG9VZQo7FybcWCOqLXZJv1KP5Mzo8JrbBz9Ry6WGi7MT2rPzvGnCuWw_rqpMUOPgLdbQn9pCvDPP5NdPlN2_uY43iLN6rFm3GiYLnTH6kM4ZUD3HXN6223-AekVRVWgyZcRpNeJtHWBATlsI49GuuPMYe5sX_vyZy8_stp18HMD6nmlVNir798AvhKPfOZHbTp9GB0bEQl-MOT3C2U6WCO6BXTFyiiY7YpqQE_z-Rcd-h6eqDKnmXloP2V1y9TsjceAvWBVXZ18ByNps0xhS4VYDLXH5xW7HSbyhkJGIoWJ6PubPVwEjQtwPzkv91AZEH9YDgY2GGR6Ylw0f62LgWy8dcW3kVR0kYesVweVoCcA1fUo5NQKEgwgEfLlmMmwLXWe7bT9fFSUu77PJxjwi--_RmC8v7MD-DgotFHuQ61-vh_tzHEvCc05iR-=w1224-h918-no)

I'm intending to lag the cylinders but they will get a coat of paint on their feet a bit later
(https://lh3.googleusercontent.com/Edr4uwE38HubN-7mOW9edHvyKomSYQzP8tST0iN5n075q-RJpyn4hjXPxTXDh1OP38UAnr4JQ4b7bieztHs3NmO5HeCkG8-vs0athvEZFLCrXD6FJV7VXJfFY_vY7fYzl67KzDHRDvgp4djDHYxTPdvFbExmCnXQI2R5YeJPVZZjHVs82Rl-0V_zT6y5cWOZzFjjmHkkom8MhSNANyMBwWnvLtzAeBIkHHttKuveJTKAsBGwY_-ygzU1OpLEMyeVY-6h1-JDCFzlJHJ5tDklhbFLLiu-aIG6rqlsfbzNbjDo_wvPgbt9BMyb2a4s8mYT1RGjJjzSg_TIj0FhCxVUjlQG2nIk0QISmGj487F3fngRfRWe8bdnGiipQ4UnuAKFCNvcIfVGyAxcpXO3cYY7SVb3PKd4NrPOZXLetk0d0HE6A81a3IKc20OUjO4EtRl5D4IAyzb_ICMmgFxeIr9gsAvkM0ARmAhj7hG3HwK8VNXTtQWz7e213fHAXRB5XFKn8e-ICIW04vurmS384xm7IUO8Rbmhy1MqiaMH4lgbJbbCmxD2kCvNfG9g2oybOF4aSaHq2ENnrMJcP-jRcbgpmTNOJ5o2Ryym90AGr6kN=w1224-h918-no)

There's a lot of 'small stuff' to do as the rebuild begins - things like getting studs made, shortening bolts etc and that is going to take a while especially as at last the weather seems to have improved. I have an inordinate amount of catching up to do in the garden so this is going to be my last post for a while. Next big thing to tackle will be boarding in the flywheel so I'll be back once that starts.

In the meantime - have a good spring and enjoy yourselves

"Y'all have a good time ya'hear"

Regards from tha ol shid - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on March 28, 2018, 07:51:52 PM
Yo Dude  8), quite the instrument fitter you are; the piping is spot on. The old gal (Wide Awake) looks really regal sitting in dry (video of the short run :shrug:) I’m really hoping that green grows on me. I like the John Deere and Oliver green; this one isn’t as “green” BTW, there is a wee bit of sawdust by the scroll saw: shame on you  :lolb: :lolb: :lolb:. Keep your cords out of walkways now you hear  8)

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on March 28, 2018, 08:01:10 PM
I kinda like that green, looks like the light green that used to be in our old factories, fits the machine.

 :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on March 28, 2018, 08:53:26 PM
Me too - not usually a fan of green - but it looks 'right' somehow  :ThumbsUp:

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on March 29, 2018, 01:08:37 AM
It all looks great to me. The base is very well thought out and executed. Still watching along.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on March 31, 2018, 04:27:57 PM
Thanks for looking in guys, the green looks a bit paler in the pics than on the bench. I was hoping for something more sage like in tone - the label gave that impression but it didn't turn out quite as expected. I'll live with it now though :)

Nothing further to report other than I think I have come up with a way to make the boards for the flywheel - it'll be a while yet though before I can find the time to spend on that.

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: rarach22 on March 31, 2018, 10:42:28 PM
beautiful model ...... the drive will be compressed air? coal? gas?......
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on April 01, 2018, 09:05:41 AM
Hello Pavel - thank you for looking in.

The model will only be run on air - and due to it's size will probably only be displayed a couple of times a year. I used to run a Twin Victoria on steam for many years at a local event until the gas cylinder was forgotten one year. Running on air made me realise just how tied you are to an engine whilst on steam so never did do that afterwards. I do admire your passion for doing it 'the right way' though  :ThumbsUp:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on April 29, 2018, 10:39:14 AM
Morning guy's - just an update to say as of yesterday I'm back on the ol' project :)

All the 'To Do's' and 'Must Get Done's' are out of the way - still some smaller stuff to attend to but basically it's out of the garden and back in the shid  :) :)

No pics as yet but have begun by cutting out 120 tapered boards for lining the flywheel and tweaking all the foundation bolts and nuts. Realised I need to paint the flywheel pit and get the edging done first before I can bolt anything down (totally overlooked doing that  ::)) and typically, having masked it all off yesterday, it's bloody drizzling outside this morning  ::) - whatever it's good to be back on it.

More later then

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Bertie_Bassett on April 29, 2018, 11:00:08 AM
morning Tug

glad to hear you are back at it again, will look forward to seeing your progress :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on April 29, 2018, 12:08:47 PM
Good to see you back Ramon.

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on April 29, 2018, 12:38:02 PM
Hi Ramon,
I'm pleased to see you back in the Shed. I'm currently waiting for a quote on some castings from Bob Potter, haven't heard from him for a while.
Regards, David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on April 29, 2018, 12:45:13 PM
Happy to see you.  :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 01, 2018, 09:02:40 AM
'Morning Bertie, Vince, David and Zee. Thanks for looking in  :ThumbsUp:

As you know Bertie yesterday it was just persisting down all day so spent a long day on the flywheel boarding parts - it's not quite there yet so pics once completed.

Having just got back from the weekly jaunt around the common it's a complete seed change from yesterday - wall to wall sunshine and warm with it - time to finish that last bit of painting and I can begin rebuilding  :)

Can I assume from that David you are going to make one too?

Back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on May 01, 2018, 10:07:54 AM
Ramon,
I've asked for a quote on the castings for a cross-compound with all Corliss valves. Without your build log to follow I'd be a bit reluctant to take it on but with a wonderful example to follow I'm prepared to give it a go.

 On March 3rd Bob wrote "A batch of castings should be ready any day now from the new foundry. I will get a price when I have them as they are determined by weight. " and we discussed how to get them to the other side of the world. I haven't heard from him since late March so I guess the "new  foundry" are a bit slow. The next problem is transport as Bob has had a lot of trouble with damage in transit and is reluctant to ship castings overseas. I have people near Cambridge (and near Bournemouth) who can store things for me so, if I buy the castings,  the next problem may be to get them from Sheffield to somewhere they can be looked after until I'm over there to sort things out.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 01, 2018, 11:16:14 PM
Hi David - Thanks for that vote of confidence but perhaps don't look too closely as mistakes do occur  ;).

I guess Bob will be in touch in due course. They are going to be heavy pieces to transport back but  if you choose a twin Corliss you may be able to source locally a couple of pieces of rectangular CI for the cylinders to help lighten the load.


Well I've finally begun the rebuild. Lovely weather today so got the base outside to paint the flywheel pit and as soon as that had dried epoxied the 'brick' surround in. These 'bricks' are nothing more than square sections cut from MDF board with the joints cut in with a knife edge needle file then painted the same as the plinths - three coats of sanding sealer and three coats of aerosol paint.

(https://lh3.googleusercontent.com/Grqf5rajqOoyVDVkr_Do4DjQQxrFTLP0GrLXFSanSU83tPNeCqSJvt9N341ng1_C9hK_kjbUvRYL0Uk_Xg4ovLAfHBkugehYet5cl1tDKBmFiaLNLEI8VLvoFRTsCfVD1ZFdZmMOZ8zmracppDWmne4s71gMg9sTGMuQAnmF8pGsR4S7dAXE7_lDT3D1wHL2pWfPMrHQzKtKLe7rVsvrJ7nzDoPfEQrLEEQEE0F2R_JXjGJ01c7WAK6W9eOZCF-L-RLUarB17-QeCkjvqJ2pfvHdBX0zyJQ2kOn6GLukYhP9neLawCGk2ZXaTvZqmO-KTdj6N07UHRkujb6xXPESFn6IwOhtQBOAJsww6ntFgzzQ4NboyYfhbg8sWV86oUGurCO5DXK6-946RXRNwlhxQH1i4KSK9lGYk-07P7K9RB_Ygq5P09hBtt_KPIWXU0yDvkB0x12elmw1vf2dCpllLJ3Vf26kGAaslgRiPZ2PJnsnLTRDVo5gC2ztGhXRXYXCCfOJJTLhq8pMhf5Mbonkmf9f7n1HLArBZGQyfun1_7PLcVT39U9BKanTyX1857620HNYDP3wIidnLr2lJqWXuVnCI75VgL6-kBXRBBdu=w1224-h918-no)

(https://lh3.googleusercontent.com/VnSqhgRN6aJLUh709HMqjhkAKtGZiL3CIRtOD7nJ_oN_xU5AtrMp21o8kgEXuJx5-npJv-ybF_VCKEvXlflB4L9xyLLrbJ9zSFiTjxInlfZhi63-SavGxf-j5jJm37deac9bqAknq8wfAf4Cv4vgtGf_w56v9Mk1cRV8C6aat-ru3JS2BPh5-fAAYs3uSqowNshVpjPOR_M-SllkxKy9Ti3A29WhPmZIjrHHg7x96199Vb5CUHW-Pna5Cseh4mnTUrNg8w7pVWZuUsIY7s6tMXxqtx9g8RFzSNg38doXoQHR2eB5Gmmv8EVgwviOaQIYyWgOF9bvlyf3nJ7YWaoCMOcDCYggDQ7dtoL5mKrhw9SrYFX5KPCoyj7wVc9WqIbyFXnWP8jF4KUiQcsqXMqJYmmtSTTBOGCg34htqKHgUaXjmSs-ujoq-QNe70LoC2nFHFticZlv2bP7lZs4kfv6I-E_MbW_OyjXnkKLV6qMJic5lZHLJKerypUu7CLhzAPM94nlcVP46uuO-Ag3M55p0ivW3GzfgS4G3EU9A-e7s_KTedOs8dIcemMQnHbQLSyAy8krRJWvGbuIj2dlFfA3m0Eq2wrJBrzDX97F17V5=w1224-h918-no)

The pit sides are layers of 2mm MDF with the joints done in similar fashion and a light coat of beige paint to give an appearance of stone - most of it is obscurred once the flywheel is in placed
(https://lh3.googleusercontent.com/h_VtkmO5KVxS1G7yns5FOzuHZIqy4QcFheMELIEAv8g1QqtEE6rqOiFkkQ_k9LdEYl-PWz7MFtFZmzOQ3j3ZhwIkdPjac5OouvbOkzuajUvJ18czw-mQ6WzlkLCijSWYkTzgZq5OIBwo6PwgSe26C1_nWXDrt2PHKdM6AGNFshk-g5VKFYEhuFLK2IhZGMd2-PSugrdfeDR7yCwEhBz6lZ_gJNzk_FVNvVmD8a5G1XEn_FCrFI6dr8UzpuAPfvc3YJnFvDg4DJL35ZSti2Wh1CJ-_mpH6QgTky1KZ4SfsxsHnh43glz7Eu30L6S3wdAoCYDqlo7VuOvUwe4Zltus0IJN20AkUoE4eRATquo0XNE5q4dI9t7Vmxmcn-iMMyYA4wz9kUTDMlbHSAnyMz_Cqxuc6BabYpfZR40PwxKqiVBl9x_8MQdPr7oYVT2TtEU63ot67uiXcc0v7JNRWbtghR-zNbqsNCIsErmVvsJhZY6TaYL7QMp-QKSaMpcaKjKVAh1FHnBIh5cKUatMrG4KuGdIunvEsq5vb6FZ3_2HliAiV3GCxEwySLZrt2VpaoZ9sqlbeFeWmPDNqEKXrujFrO6tcPDL2QVSFHbXILQY=w1224-h918-no)

I have bolted down the main bed-plates and pedestal and was pleased to find no distortion or misalignment on trying the crankshaft in place - so far so good. The shaft has required a couple of tweaks to take the hubs for the  boarding - more on that a bit later.

I intend to bond the individual boards to a disc of 1.2mm thick ali and have begun prepping for that phase. I tried a test gluing of the ply board material to the ali using Zap CA - I don't know how many individual planks I have laid down in this fashion on model ships but this is the first time I've managed to do this to myself :Lol:
(https://lh3.googleusercontent.com/N2bP4YLzlOePPa1jgrUNGGfW_A3HfepkG7m3xNckSkBh6xIHnm-LUAfpqFZwglhpMSgSD2_TG7vxNAVriUK68J1z5VKsfAQ67toRmltNiCtHJIjrNm5KJAjkGsu2EdAoJW_LsgXy-OkWRr43gTsvmKBZHugrW9XRk4JwSoMtOP7O1fY2Pr-WLHEKZz5j2MAr3ldeHymFpELla2H1KGS2oI58BthL9LFsvmQwPSwGxpqA64VDizltsXhas8D2weC_ERnGoSwoL58nnO74icgiIaZN1dyLpwBlOchJB1F9BKHf1473BGYxqI1cRRn6IqUDSMdYtDNsBp4k0lG_n0oM5TfW5aO2xzw6vQ4B9FEnryb4xW-50K3d6bbyr5i5pB8B1GoBK0XCC0AWEo1AHkABOInzNkpjDSFzYYCpn85z0g1Nujhi1Ej2u8lrwU9SnipO0csFxCttIflfcu0ITs1apPW7FDsbnDkWqRPUw9BN00dFKih0vE2clzq5LK4qJ9x2D2IP34A_AeD2ebZVwNAAc5XLc6UnnxKqWufyy_050sXTxxgz0RatBMM6olpguVM6qj37sNFPPwm39wDuY32Ie1Vl8DHbTJNMXN8vA9Vd=w1224-h918-no)

Yep, well and truly sodding stuck - tried to gently peel it but it was not having it :hellno: it was Fixed. Tried acetone to no avail so it took quite a soak in warm soapy water and several minutes of gentle stressing before it finally gave way in one area and took a layer of skin in another. After all that the board then parted from the ali leaving a glass like glue surface on the wood ::) but another try, this time abrading the ali with wet and dry saw a very strong bond. There's 120 boards to glue - I'm going to have to use something other than fingers to hold them in place I fear ::)

After what seems a longish break at last though the rebuild is back on course  :)

That's it for tonight

Regards from tha ol shid - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on May 01, 2018, 11:37:15 PM
A layer of wax paper between the boards and your fingers should do the trick. At least you were not stuck to the workbench!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on May 01, 2018, 11:43:45 PM
I'm going to have to use something other than fingers to hold them in place I fear ::)

Someone else's fingers perhaps?
Put me up at your place and feed me UK curry and I'm there.  ;D
I would learn a lot.

Looks fantastic Tug.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 02, 2018, 12:09:10 AM
What a man has to endure for a beautiful model  :stickpoke:. Before the next time you might try soaking your finger in cider  8) and liberally coat with moisturizer cream. TBH, Tug, they are looking a little cracked and weathered: utter balm works great also  :lolb:. Beautiful modeling old boy  :ThumbsUp: :popcorn:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on May 02, 2018, 12:13:00 AM
Beautiful job Tug. It's going to be spectacular when finished.
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on May 02, 2018, 12:45:38 AM
Amazing detail, everything is so crisp and clean!
Looking forward to more.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on May 02, 2018, 01:03:06 AM
I can't really add much to what has been said Ramon. I have been following along since the beginning I think and its great to see it in the finishing stages.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on May 02, 2018, 01:11:53 AM
Your work is looking wonderful, as always, Tug.

As for the CA on your fingers - I have a bottle of CA debonder that I keep on hand just for this kind of occasion. Yes, I've done that before and it's not a lot of fun.  Any time I've tried to remove it without using the debonder, I've lost a layer of skin.  I have found the debonder really does work.  Something like this kind of thing:

https://www.amazon.com/Bob-Smith-Industries-BSI-161H-Debonder/dp/B0166FFC96/ref=sr_1_2?ie=UTF8&qid=1525219649&sr=8-2&keywords=Cyanoacrylate+remover (https://www.amazon.com/Bob-Smith-Industries-BSI-161H-Debonder/dp/B0166FFC96/ref=sr_1_2?ie=UTF8&qid=1525219649&sr=8-2&keywords=Cyanoacrylate+remover)

Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on May 02, 2018, 07:16:30 AM
The pit looks very good Ramon, shame it will be hard to see most of it.

Also did not know you were that posh - cup and saucer for your tea in the workshop, whatever next ;)

J
Title: Re: Tug's Corliss Tandem Compound Project
Post by: J.L. on May 02, 2018, 12:17:36 PM
Hi Tug,

The flywheel pit is wonderful! I really like the nice green border trim.

The whole project has such an exciting feeling of expectation with its anticipated cutouts and raised plinths.

Lovery wooden surround around the flooring.

A delight to follow this thread Tug.  :ThumbsUp:

Cheers...John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 02, 2018, 01:26:51 PM
Hi guys - thanks for looking in and all your kind comments  :ThumbsUp:

Been busy this morning still prepping the parts for those boards so should be having some pics later.

The finger's fine though nibbling super glue off is not quite the same as it used to be with balsa cement - I'll bet there's quite a few of you who can remember that little pleasure  :D

Zee - Sue does a mean Chicken Jalfrezi on wild rice so pick up ol' Whiskey on your way and come on over  ;D Ah wouldn't that be great if you could.

Jason - tea is served at 4 pm prompt by the resident workshop hostess - good old Sue of course :D We have tea and cakes every afternoon in the workshop annexe where Sue keeps one of her tropical fish tanks - its not the same in a mug (even when it's a MEM mug Rod  ;) or an engine mug Dean ;) ;)) so cup and saucer it is  ;)

Kim - I have had the de-bonder in the past just none available this time. I've not stuck myself to a part before but did once have a real mess when concentrating on a part held by left hand while still holding the bottle in my right - I had pushed the capillary tube down inside the bottle for more control and the heat from my hand caused the CA to overflow all around my fingers. Fortunately that time I did have de-bonder but it still took some effort to get my fingers apart. I did once inadvertently stick Sue to one of my control line models but that's another story :D

JL - I haven't 'logged' in for a while so have not seen your latest progress - something to look forward too later  :ThumbsUp:


Back soon - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 03, 2018, 07:52:18 AM


Hi Guys - thought I'd better give you an update on what I've been up to. (I did this last night but just as I previewed it the site went down - fortunately I'd just saved it - phew  :)

As previously mentioned I intend to board in the flywheel which is in keeping with full size practice of an engine of this stature. I've decided to make that boarding fit a rebate in the rim and be held in place by the pressure of the hub plate. Doing this on the outer side is not an issue but the crank side would mean either the hub being captive or, as decided on, split in two and held together by a ring and cap.

First up, having drawn it out, was to produce the boards - 60 per side. These were cut from 0.8mm three ply left over from model aircraft days.

The ply was cut across the grain, the width to just over the length of a board, and a simple jig made using a piece of white faced particle board. Two strips of 1.5mm ply were super glued on it, spaced to retain the ply, and a metal guide strip set at 3 degrees screwed in place.
(https://lh3.googleusercontent.com/GeP27AJY4ixYOFI9gv_MgypaYL2MSKS7mqeXtCvNeQd6Md57FRmruOuVm3H8A2bsLE2ZJbfArWQlXg1M1acho7RiEj2y8lWNLwCK8N5pmYqln4r0vWFkndVmtTW5Ye9RbxZ_jcZuKCAO_1e_oQghiGIrQrDuGzzyN_U5TAicnw4-R2qp7FBxCCNaxeNuQREJntEaNZkf_N1VuG-SrHJ6gYl0aQ0_6NbjBKWLyyrJGLeACwU9B0MWYr8pQFgxCqxhQza_drvvQF103biRveNu2BwUBeq7Hk5Hb5wjbKsKSRWddJBP3AJrOwOF0EEGvzibWMDIE7yFMYIrPYhLRs8XGSbsh4SiBrG_TzoBQPrZ8GkUpyn8sNfN_SoKxH61kx8XA_LaS-7T-gkSkgvzj-bBCkwlkZCm6d7bUEN6irgTuhbb7kaK9Lc6eWyuok8ufg7nogILk-U-gTSKhL5OEnQUtNFKRCQpF3XjgjEYg8UF1Ih-hGFXH36e5SmgJ4D1hydOMVKYqPdytazZ_NAvaWVodmOFO5uPdmXc8P9Zbghj8OTrB7GgpMNJpzf1a2OXCmvNKfQINhnyETFC4wlCLBd5KJRFKl8lgl0icAoEWA1j=w1224-h918-no)

The 120 strips were cut off using a scalpel turning the ply over each time to create the 6 degree tapered boards.
(https://lh3.googleusercontent.com/ZPPDFi1D5artwSDja-9Nlt6SnJ7UgO9H8v2hgtVMWX1JmD0ESVDTYXY3la3V_HzQH6-R7jsRdALPMMz3lyxtXk2Xsj7KWqH5dHnVlXDA0EGsYMEc6dSz28diVlI59FLi7tZbMMr807U7-393pZeakYagjup6oLX8a5CLMgmyLKzqnccp6vYdOEATkR7fgC67SSUC-NNdThVzpjSlQPdJzwjsZzFIoL_4cjySlU1hRhQCxBbaryP4q10hhM9WuZreG0oSzl2aVw2LILwhkPOX1rasIUox3Eo80wMHoT5YCyb5dmEn7qH3_w-RPg9y2A-UsuGQvBvaxcQIoMsjTNHTtOdQKQ04KLapT8GGayTraLEQF9W5z0dEbyeg_SBUeGlF1aUQSE1M7ngO8VdQebjky1FOJHJ01kBrABjqynrxXTCWB4loFyuutYNdBDDj88wFPxs5FALlrAR48vncREyEHFadGOyh4Gto8sh8UwduKR5aHnhh-DfFKWp6dpHwar2P2AUyfLW2ilcUTMApRHsIr4IzjVWa2MFL80lK-hgPeGThjxmna9zeHszmBMvTZpkGJkK1iGJVJu1xHQb9483Y3wIVwll890XpSIff0ir5=w1224-h918-no)

Wider than finally required these will be machined to a true angle and width at a later stage but this gives an idea of the hoped for effect
(https://lh3.googleusercontent.com/L4XF66eon_RadRDUOhWCnsxtajc0Oq7of68BCB6Xcnq3Q2xiHDud6yCxIQ-FmIsIgonXOzmWZyTWMDcxSIfitEMn6eKRShFpOp1nTb3ZdqQj6kGktFZ14bLrSOChr6qbra23KGKft5nq6908k3DF72aDtbG88OHK0zKfmZgES5ZZR8N02P2GbgWvm6x7Z4cdLj0H_GsLlTwOKzVI542VlNeTIxg-TfwQkoCnJcUgxaPJo5WcK5zs84x6AxvY1Rai0gmnpUO4E9CG1F3aVGKPCvM9WB4DOsrkwzFlwxb7o7o-0WMN27DoJGCJSc1GjPWdy-KUXVRcAG5bI9jnNveY850cJOYV8xsNl50yv0Vy-vgORw8tu96uIBnZHl3NpxBVBK7AdnawOWc-COkxYcFwPeAl_i_lDCZ1ZmpbppOWgWmeqhWviMbDKvuXQTum51VJN3HwsoLzH4q8yd51dgQ6wJtAU1Ub0XT8Cgv6PxtVAGSMS1Bvo9iTWG70kICmd-0o_8oqrelAR5sP5p_dRx8mWxwl2q81Yw6HEHdussOnpCgYM1gNan3hZ_ZWuxJvE8p0J3mI_Zmia23IITFwFb_gzyJk5v75HpWqrevM9pig=w1224-h918-no)

A sub-plate of white faced particle board was bolted to a large faceplate and the ali discs cut out on the bandsaw.
(https://lh3.googleusercontent.com/wdPWeZIjU0VaORl_KaWMRi9CK3bBPYKaUAyWH3Jm-z3wPOjLDzJAKsD6KenLdKzekSwoZbDH2gAJqrFZHvgoPxZbzpSeAqdNhoBnKnSP4C9UZIaP49hGCN-29dS4uaUK_ggcu-cuEydKAS_8BvKj7mBgEw8kQB5ziT3W3ajnmVtcm5xKag_TI9lid5I3e65zitWiE7FL3I_OSEOENshADE-5fOhXc7doyfSXlQ9bTOdl-vGthaqSQo7FY3kJfgP6bYBh76I-AJ8KlbOow_BgvDHsJiC24ZpBLFwgWXRbBl_LRAtjn0f5G1zGTMgcO6ETq-DMpdYNT2BPvyUYvwVrlrP1d7ljrt0ccMnddeTHTIgOOPI_gQoHFKZMaPAdG_7WB55KVpwQRjbpw68wqPjsUpTijnigwywED-4zMq09s_2wzQLPOv-xkQ8Ub8JNzWluUZxEZ63hyTzMTePux2IBzdUbJlsvVO8cX19kR8DvsXcR3lfSorRdyegZRc58mgl40_V-t7EZnv0O1UblSoKU-tUVqTkpwoDrvSkYsnHOhRZrFoADe2Eh-ZxSNqn3PiSHtWoRONoIT3JKhJUbgV9nhWw8iRjOCMmS46RV6Pty=w1224-h918-no)

A 6mm dowel locates the centre and twelve screws outside of the finished diameter required hold it firmly in place.
(https://lh3.googleusercontent.com/MR-fEDLMFiMmpnyH6Hfzcsi77qOsGqKx7BQwEk2Pn65tZshlDLvTaFljbrNY7I11b3UsI6Tevc7G_8NHGeSImMG8MG1UXKNmZ-lywW0J2xMjkBFn5vPhxzjkyVDflhTLDSPRIKpl7A98zsMkByZRgTuppmEAbifaVngclNObbX0IZ0vlbAu4y-dMZju3HDe4wTBmXCzAEKY9VvudX4xxgoKAHKnlcFIYRX1mEaeFD34zsE7HT1omQ3aueaYAJffxzB079nhxpxxdW4Z7r4S_HubxiBHPIvg67x3lFLOV6Wj7Yax3RFlJWWrkr_bliH6xVew5nsTzRR1_5aejBUOy3x9EGwIm73OMT_A5VauEZ6W3PoEmPmlHZI1O_6-GZfiT8YrV50SqhrgoYUfBS2DxwIEx7AjHA2RG8Hp3nf2y8RN8LVhymYnCL0bRhGduKhIVuCcv_SPnJSgj277ibPqvVQSeNV9X9QiVXnpapjldnn6jGn0mKAuqrOyKVP80Kov56kLs0JW7UzIvrstwQUx8-_DTZeO3TCRy6IrZO-1CHsnjfy42ekCoofTP77xbuIF5fAxJlK17khvhg0vGvDqZH0yDgWDSRcawWIgtNNqo=w1224-h918-no)

Due to the anticipated 'claggy' nature of the ali sheet a very sharply pointed tool was ground to trepan out a 30mm dia central hole...
(https://lh3.googleusercontent.com/nXIBzXKyNzyNOiaQb3BU4Ky5UutwFDrlQenQ3LtNmQBWZZbYldTcXmYj3qHvYbzsb3R3kJqzLW6zl_zyDQb7YAzwkjuiDTVWO6Mx56Ua87hwfuOnWNBiNr7SD9KzgOSFxsyuTIoYV99ePw_5Gtc1ssfqnsPqjcXF4hWpEREYMlAZQcjv1c4yn_-HdyGY-aV-QkpdWhcEvhyWy-eyKN8v7zVBzZMIR3IyK7y3eYQajlt4HQUDkgehZ7se37SxlhmVYXphcrUcjDvb3EkLIkUch1yr0WKUUx5BFpfFNsM1kft4ZphiLCdO2VnUJ4CQOSs-LzGJe1R6vdOkSFpYbwE9o96I_sEz-ShqT80uiNIwMe3_XCWbZz2nhZEwccpfzPGfGk2da3G9vGz58QfwgGtBBHsiL1yvPahdu21z3kX62fpl16jKa_mng_t9AMnGI9c85i1PONZHYGsBTlOY5Z7t-oLm2l2fEZp3F6UHCSznW7D0kWfyYeseLaP-biHlIuY9V7MhdS5S2OzfwdcQVQLgTo9CoP2IqxDprGMm-AbLrS1GqaODNkz8xOGF68fT0duL7cVH6xDt5E_bRiePNv-LSGscguqv8QvUOqBjsQgZ=w1224-h918-no)

....which is to take an insert that will locate the inner point of the boards. The board was also engraved on the lathe at the four quarters to act as positioning guides for the first four boards
(https://lh3.googleusercontent.com/sY7KP1R8yBmMEIAVA-RJZKsKtmflrsiONnsEDLcUi3p6KU0KnH5O2fQxHjTOJoMEZESqM6cvm7Do_l5wtbtyGLL3YntxLF2thXc4kWG037BJzTfVyNfi0ATgeKjc5y_IyXTn2e1yAuXLYgrKP-fFT63WPxjvgMYsHYVONv0OLhWXYgwclhtdThQ80uELcR1nho01I1DjnPzVjKGY5JwIRx_dkK_KsLGMwMIoY59Iw3BafzDQGQqZ7D8FLuaSBDrD04_Y9agR9TrRjg6MHIbCL82ZD7GhpIj9fNnQLGalYlUX1uWYFepaPbcoJozvwQHDcgLi6Mc3bsaA4VOelpgFoIAbL7DwElcypYxtSgI8N9V8pLvywqoo64aCjMWB1hunN_b_0teO0KVPQwakSbSmPQq744tu0PDwN0Falfy2XAa-0Ds_4VQVWvIy5LsplWVUQUI6DEAXW2-Qc70VIxamKcSWw9Ng0e6EaAPZrF5kD_eGPiHV2en4p5M4Q1RNVVMiQyr20zHLWk8OsUc102tbMuJprAs8UwTUBc5WP3FCpVi1SaR_9Xr9Wz8mhAw_G3AShb4Fmt_TdEU4aCcj3ENUAdvneOPW3BGSl_PDTzFY=w1224-h918-no)

The hubs began as silver soldered components, one 2mm larger than the other
(https://lh3.googleusercontent.com/Qtx5D6DRZxjJGsKd3l-TVyCvmWERl6yegR-tnJgedY039fq_mxHveHv8fOWswC7DBW42A4hcSCf9_ojuIQiGqDXIH006UjoJpv6OU60K7-pm1WSqhu798vJMeLORuPpfbqJHSV8p-F8rLgdPRrnnocGZUAXreZCHea8G3LZNbD9MfO4kbdQBg5Fhi9v-zp58jc1PVcqAfyKYyCBVsXY-RYwS4m4yFOYTxxKNoOcuiBq4HMDIWz_KBmcTFPi__E0lw6AF-fVAIcum-37oYA1FFZHmu2trprQMmVcShY_SAMqHjJcO1yBA9wl0CFmFZnaXujqfUMYwmrE7Kiaq6bAeLPJZ-2CiXcmGaDalnuv9qr4ef1DKpur-M--3fH9U2CvBzMMF7EC5Hj-dwe_BKlo4TCbGJfCiG3dTFh2bWSd5SMeV_JWmDJs_XTzu1SkxjKEwYvT15GhWqEucb5IA3hCBYTJnAgCUvuoWdHMBSkqoHVY0gYe9KblUBZXcllddtwnOXaqxpfeT8NH6Dsz8BB3ke0VBhpZkFXKRBfUK9jrSI58IwXqSE7SzGejpax--4jNFPdnm5SWXWpMInLWW3piBOZ6qHYyOo09nRqU6-20i=w1224-h918-no)

Once turned the larger one was cut in two on the centre line and the faces lapped flat and cleaned of burrs.
(https://lh3.googleusercontent.com/1PPVMkysr4efU-ZEb1GZ7TfoDP4yROCYR3E3ld0DniDhxUgbAzJk3bgfaWvsmImy9oyFtDxMBk-pxs0BlGz3eBOZp2j_O96uMPt3gbpC90IWh__KgHFfyZ9-6aLV4fvjxrpeeLi6aLUjd2bSu-iB5kwM3ELBdnG2zrz2aKX3huZD9zigANildNfkIHxOpM7FspEY3s5357fgybxOyZFZ23YQW1n6AIGk__L7hsyn_ony_yP58_6_zKchaja8QAKchW-7GEqXDxKKjD8HLZlVOXejedRqHHB3HxVeUWQq7QjSUmFMQL1ipwl2N157CM7vmxKkkJ0QNO_KEAWl-ghRoP2CyVtg4CappK276KWwUJH_kMcXFU7rQP2ynQQN-0u1ReJI52IMtYKq9_UqO-8zgCGJwL1KXNZfsSaZT74_8AC26GPKp-9m2yLHrwrKAfAzsO9IpOST2v8SmO6De1ZfyJ-Pjw67qXtnrL2Qfjy6NNPq42ZoYHaWeg7LTapvTqF-HYoUQE_UwQP1F60HZOr85CbO5NoLtLbtpOQeO8JXyzaQJqx8QSe4IK17W-Km7Lb5IaZ5fto_RQLyIfvqJHaOEGCKIX8ygO-1SY7_hLBq=w1224-h918-no)

This was then soft soldered together .....
(https://lh3.googleusercontent.com/nqvhh6PrlUKwbAUHpycET9Il0-sWhOioIgKpfUW3Keffob_4xihv_ta1H_Cyok8XvscQro3uEZyvwP_ZCkfuRDpuSqjQ5Ea4FVZhOYDpy88kwEe72E7wF_i2FF3IHMsA_o6-G0N8QQFHVtxQ0uAVwqtw953VtYdeAEP2iRvfUb6A2Z8YTIoI9QfS8VUHT11mGeEjrJOLL_-j8VH_9NH2x263YYGqGrySPRhKmMhTDKLFelrtgK9CCtLHbQ_WZoxcZ9mweebTq9Lsw6TVGzAz29g1gcxPFFLmIFGQYR5_S1p6BcysHUFj5LoIjsp6jua0t0T1y71L2Il9veI5cIWufNmF4NzhxvrluJvHPK511H5M1Qx6EBC7QJSlYoKWYPCqA7-P9XozeJXNm8P5v2-Uzbq7Hk9YKWNF0GyQTVfT0SvDaSUz1-L-e6iu7LWsOYMegZ9RsDInYUjZhyxk0VCtgDV5srflFQlKD0BPNndkmy9I8-nOb1nxsSZNWt6kGC8R-qt7NZ6e63qTtdP1OQpP0eW-vwljD8YkO_XKHaSLkHlV_V4LKNsjkMPG2ac3uLO6hMZfe08LKOOFWx6PjAAcKndLQKjvqC2Y1yaN7gUQ=w1224-h918-no)

.... then the two subsequent high points created by this were carefully linished off to enable initial holding in the SC 4 Jaw
(https://lh3.googleusercontent.com/pFFBNuYwTbbcWnMhpJlCNnEK1vYA1G2tD3JiUPdgueG3ouJ6YI2m-iuHNYc6r27quyr0jgEAA9lHODAfUveUEvSFAeCVx9hnIKEWPXMTqRUMIFxJLBXxI_zBh2uxtWeSGjkxycpwFiJEspGmcUPPtF9SAK9WddRgAeBWeNeR5ZikE7k2YQ-txrYoDwbIrkeEAl2D5r_PPeVbL5Z7lfhO9rCZJEMpKu5vatFzYTQHC7A73P3MLoK5xexpJ_K2u6oe6E4qhpHIF-GCVOo6ho8BMDRUcPNKYCFVmGEPWLzikKSiq3-ayljoqW_c3TDusMwK0VSwumocVGGbFGcTiK5tMR6NZNRBIg1BR3xbgpFTbq1jwJIDF2goJlWCKO7J0jADqsK3HB7CwgbSmsC7z8ZQVtswoCw7hak1BpB-8v967bNnvkCKNgH97soUnKLPOqh8sWPh0A8N7J2Lsy42tq30FP86vdrGDstfMepa6SZ5CH0MQpP3ZXujvrHY1KnBoUqpFnBJjPDF5uUuf6kzmzKI2DkCPet3EuVrNd3u0psBHSLpq7P2UBYuw6VfjpkQ9D4zz2jhTMcDEnlkbkZ17ESFBrepx201LBq0Wom-RJ_z=w1224-h918-no)

Both were turned to the same dimensions with the split one having a register for a clamping ring. Once finished this was heated to break the join
(https://lh3.googleusercontent.com/_kyYmKhxsFJw337CD7IYddEyRwpJzIoC39lydkfan8R_ADhYEc71AYb0C41_bXWPjyBE-Rvof6KsrOZnl-ZaMGMz8C3DLdf9Ndx2__-EmB-ZHvi4hOtMz9LOaWE-FUbEn1K_DwI2rGzH3GzMI4xEENcXy38Q-BIb2Ak_aBcfkq7NS8Xcytex2yMXlSuib0xNWyJT1YFhuDQzESZ9FcqDPk52wzDlBqjkWQvXpauGv10TiLkej1Fh-_4bQG3dkdaCikWOvfH50DZ1hSScSl71lludzV2p7e14xSzUqt-fo7YvxKS6Gh3qzGGub00cdukSAgfUtXVqaRdNKcWQIztNIoJidFBpHunJUg_aSD25Gc3YHSlFbevq3e_ldjIZUjsB1QETOsFBQHWLlm_OLuwIGRZdxVuSMEwRrVYVvxgsy9M65D16MZfUE3EJIQQ1nBRzbZ_vtReatCn716awPKTXxJNVJeqpxm6_FtHSmrCwdu9EJigqC71sLGGZ_55w12_SjvWDjfJRNNWq_w-nbEYOfb8BwkqCJL2COoumNYSlXnuw_S0cW7RJoId3baZWY7vhVqkQrIB5RXUl2a6v73P4CzpSplncb9ue8cjWlAgm=w1224-h918-no)

The parts ready to fit (the hex head bolts are temporary  - it's intended to make square head ones)
(https://lh3.googleusercontent.com/yhN5nOnfiXwK2jlNDxQved6dhJkK--8Z66jC83stgTU7ziKjgEz6-0KavBLZIDlxwE_M5_4I8bRRDQTuvQ619gi7jH96SuHE4E31Ft0S3IGy8WkpQsAkjNimRQpTPvIrMTosuf0RyLAqFuiU2E-L95MTNcvVZnrEvELcsJ0Q-LjJ0B6RLhXxInDdP0wKAwFPci3n2ClWpf1wIxx4IFguLbJdgZPDRAjxybQZPuB596J6jzoyWlpE3NqZp6osOvb4nABNF2ZmIfKERRTr1-uNsQdBtPrz9Hoxbf_zTXBqqtGmT0i2UPWtmKFyP5iekjhQ7yiGTMe9wzizibAXgYaslaMG4cbhsNltFtYSMvp5i1ppfQRQnPvxxrhRr7f1AA1NwkxWZRb3TxNHpZNiOAcQXAop6WDtzlplPjX5Z8nAro63RVYkZs90rURsbvNAs3L_VWmuhdXNna4Z4HHWjX9nfwaM8eBtDld2tlp87hpmh4d8e5-s54-VcqtQNaT0WP73j6Oi6SyZAnfeY_k79_aF6zGYWVBI_OF9so5Tj7lZWI05gBm0k-cq91dxTEkP1ZrLY0xTdkAPzUkoNcAIRZIyur1O4kG6Qgw2tAxcDl6x=w1224-h918-no).

That's the current state of play - next up is to make a fixture for holding the boards to machine them and get them stuck in place. This is all new territory for me but I feel fairly confident this will work out - that's put the kiss of death on that then  :D

It promises to be a nice day tomorrow so will be digging over the dhalia beds.

Regards from the old shid - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on May 03, 2018, 07:59:32 AM
Masterclass Ramon!  Thanks for posting in such detail - lots of things to file away for future use  ;)

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on May 03, 2018, 01:14:34 PM
I've never heard of a "boarded" flywheel.  Any historical pics around?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on May 03, 2018, 01:34:23 PM
https://www.wigan.gov.uk/Resident/Museums-archives/Trencherfield-Mill-Engine.aspx (https://www.wigan.gov.uk/Resident/Museums-archives/Trencherfield-Mill-Engine.aspx)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on May 03, 2018, 02:17:09 PM
Thanks sco.
I'd thought I knew but couldn't find any pictures.

Seems Jo had done something like that.  :thinking:

Looking forward to seeing yours Ramon!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on May 03, 2018, 04:36:19 PM
Excellent post Tug. Chock full of good technique and excellent pictures.
Thanks!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 03, 2018, 06:53:22 PM
Hi Simon - hows it going with your engine?

Thanks for the link but here's a pic of the effect I'm after. This is Corlisss valved engine in beautiful condition at the Manchester Museum of Science and Technology. I went there many years ago and somewhere I have loads of (pre digital) photos of this engine taken at the time.
(https://lh3.googleusercontent.com/VMzLww41IQNIuyJcOF6hrFhRkY4Nn2k4QMh-CcCFHEh2sleVVZnqyGXj0EvIL0hE9UKewVMOsuqpWFpEUxixTYoE2VH2l7eqbVjOsmKbYiX73DKGCo1nuISyoyKyps9lOtM4OMzPr1hx9exSBIFszEzBDzpjqyd3vG3LoMttz-d95Xef0sROFMqxPbDKIUzEuO_BMkU6-iYgdWZCXBdsRbeUpj12YS4jV8ur4oPxzL-JkAgPBwkKSGdw63Qlt4cn8rtnV5Xh7rE7F-lwHw0CqkuoMBtC4d0DUihJIAbuHBPOQoV1B6EuhsRYESXo50h-HFDtMXWNp8fwTw27O2UAdmWXtwJHs5uDCwzHwaz72T47pRbKB76HxEuJjUGmw0L82sfbvsOllDE5BJj9Pk9kAV4p4Swi_YgnLnZ-rHwKmBiqh53lwWNm5GX0trih-GX439eNdxV9WKDYy14Tg7_FxCygtdSWKdw6VOr4POaFskkvhrJQh-ksLVXur_rgwv6zG9DCIuDfztv4GCPpLu-vj7P2J4YY5fYOO0pdZMLzi51I_B4nXIq4ynIgN7cAdFUhO2c0Xh5HFKt8pTJ8MxcqaXqvjqKDJgFL_PdRfNjf=w864-h576-no)


I don't intend to stain mine quite so dark but hope I'll get the effect. Not much done today though I have found time to make a start on the jig - digging as planned then 'taken'  ;) to a couple of garden centres this afternoon. Bought some wonderful Port and Brandy infused rich fruit cake - tea and a good slice of that cake plus a nap saw the rest of the day off  :Lol:

Thanks for looking in Zee and Kim  :ThumbsUp:

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on May 03, 2018, 07:14:35 PM
Thats a beautiful engine. What is the reason for the boards though? Keeping the workers from getting caught was usually not a concern back then.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 03, 2018, 07:19:25 PM
Hi Chris - I believe that the main reason was windage - to cut down on drag I guess but I stand to be corrected. I agree there was little regard to safety so hardly likely to be that.

The one thing that really struck me about this engine at the time was the lovely colour(s) of the planished steel lagging - something else I'm hoping to be able to replicate in due course

Thanks for looking in  :ThumbsUp: - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on May 03, 2018, 07:46:26 PM
Hi Chris - I believe that the main reason was windage - to cut down on drag I guess but I stand to be corrected. I agree there was little regard to safety so hardly likely to be that.

The one thing that really struck me about this engine at the time was the lovely colour(s) of the planished steel lagging - something else I'm hoping to be able to replicate in due course

Thanks for looking in  :ThumbsUp: - Tug
And the bicylcle racers think THEY invented that!   :Lol:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 03, 2018, 11:35:58 PM
Dammit Tug, you always seem to come up with a “one up” . All I could think of when I saw the piccys was an old style “board track” for motorcycles. I could also suspect, that in certain mill applications, it would be beneficial to have a solid surface so as not to suck up so much stuff. I would assume that a solid surface wouldn’t stir up as much “fines” as a spoked wheel would. BTW, how’s them butterbeans coming along  8)

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 04, 2018, 08:09:20 AM
Morning Whiskey, - 'one up' eh?

Well I've been in the ol shid since six this morning cleaning down in the hope that I would find a 4mm slip that's gone walk about  :(. Just finished going through the entire contents of the waste bin but to no avail - amazing how much paper roll you get through between bags. Searched contents of two vacuum ups too but that little bugger has hidden itself well. Usually I'm very careful using slips - use and return immediately to box - I can remember using it but not where I bloody put it, if I did. Hopefully it's fell into some storage under the bench so having that lot out is the next thing on the cards.

Butter Beans - doin' well, goin' fine with t'maters ;)

Oh well, back to hunt the slip - nobody move, it's round here somewhere  :Lol:

:cheers: Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 04, 2018, 09:36:57 AM
Found it  ;D

Where was it? In the first sodding place I looked for it  ::) the drawer just under where the slip case sits on the bench. I have sterilised the workshop this morning only to find it lurking under some hand tools in said drawer - just didn't see it first time round  ::) ::)

All's well that ends well - back on the flywheel forthwith.

back soon - Tug :) :) :) :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on May 04, 2018, 11:17:43 AM
As annoying as it is when things go walkabout and your thoughts on discovering that was where you already looked (been there, done that - more times than I like to admit) - looking at the bright side => you got a nicely cleaned workplace  ;)

Oh ... and before I forget - nice work as usual from you  :praise2:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 04, 2018, 01:35:37 PM
Tug, "one up" as in "raising the bar one notch up"  :praise2: :ThumbsUp: :ThumbsUp:. When I misplace things now I stop and think where is the absolute last place I would look: and that's where I look first :facepalm2:. Glad all is well in the shid and garden.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 04, 2018, 10:48:45 PM
Hi Whiskey - It should have said - 'one up' eh? - "well it's very much one down at the moment" ::) but somehow that got lost in the translation  ;D

Per - you are so right  ;) - taken after cleaning and after finding it :D
(https://lh3.googleusercontent.com/1NCxSKTUEJXw_W6ZHGGebLAxDui-wq85IJmy1399bsI3TDCMKeCz35S2ujKrpkps_-iH99zZogjC9FxDg5piCLMG0dqLHoHTioOk1RIW5jvNeiRUYJbxtcgkq9wwR1m8DMnFFF6EO8XXMiViroQfMOdjHjFCLQ0gDsl-vrGH5_rm0_pzZvVgyME_fxaFZpvYyA-0a1ztkZd96iC3_kfZEaRAFTfMqdD84aHPwdYarYgmOfqvPp6MosVthEbi7lAtx62dZN75mGwits9G1J9oxd5wNa_m_QCDSB88Ig4LnNc0VtsGkz8WG0FfAxDFfdfw9__-ALdxHMvX-uTxb2jNdlA25Bqh9ueHojf_Dls4AipHNPwpJIGXc457A-O9ETRyTlUCSZCeTZmtEcEk7ocwKT79gdlO0x7JSd5lfN2eSmGW7aUUjlBpYxx4Tu_Th8DKN8wxcphHg39VnhUgv0qdNT_JMK92p4mMAB2gbf_Pvi2vr3qNOeASUDCe-P4_vkq_0JN8EQMwu5vriGB5RDqUI3s30L068-WxJnru5_vg6v4eFJbcdi56ZpAWgILpGNTQmrPpJvhajBA0A-qs75sTctmLHBfml9i-7QnA0aP_=w1224-h918-no)


Most of the time has been spent in the garden today but I did manage to get something done and am ready to cut the boards to finish size and fit them.

To do this required a simple fixture. Two pieces of ali were brought to the same size then a 7.8mm deep rebate was milled in the thicker part just short of the total thickness of ten pieces of boarding (8.1mm)
(https://lh3.googleusercontent.com/ES2_CLrF1xsRlvHnlfmthAaoIvYcqTOq1-FP_Ua0Tf2BLc3lPBA6OuAvAyLnRTdcf7-Y-pdTqraoc6HI6RtBIBaDZTQm0YuGp7qnR3o2x8DyVs2F2Cn83cuMBMpOYDb2yOH19WLcAMt-iiN10gpcPlOSRXz6CRa4y_Ef3sIOyY8a4e4et72fX1q9sNx-KjAmMHEY2bZOn3dSiRez5uNv_bn9XtIB7vP_nJGtkG2gvhLxoTlJPTyofBJXblehyo3g72RQRET0xOoB5oaI_MFwtUX6nOyetIfiKEd2EOSfJqdJRYtnrS8GbOkitb1VVAtr1B6IpFvvsIStgi0kJxHYjUfdlTJ9Ni2su_weiqluF6i-0suVstBHOKbVK4Sse8Ajpqu2jgcHpDWkc7SmCcanECLWq295GPbHl8Vg6az5p4HyoylEGbdoa7fT7-ZuBAy6cWK90QCBnu5nsyKSQwXMOfW9G-CA7WODIxhMebDWjfpo8W_6P0dW2W_sJ6He4W6fs2auCRF4hqPpAByR2LWa5nNrBhXl_ez8QgBLPaMaqtT6gAQiGq85YIAH8pEinX3QkU3P_mxpzMWrtP004SRKBxG6K4h9eIO6TK-wlO7r=w1224-h918-no)


Set up at an accurate 6 degrees .....
(https://lh3.googleusercontent.com/1Oae_PYOJBp-C542anLMZIBcW6TFW8CfTWHcj1r0aHCK7AM1TnlDHuY_LhP9AJIsMU6vyXIjYRgUaRgRGDA4nmxAmXVxXLp1VT_gj4KhMnh6jrwY7L9gGPbh3m171D_fFRIeJZgROXa9Tcx4fJ4DxSb1IjM7TjlKa0lyWg3nLjIoFFdLYlkn4ikAiWxBb8V-3-0WqbXQUCvtFh4W83zaoR97SrF3APq8Sawaitvc1d587a894ryy2whU-W7CnrWzPTurPTbf5rF1Le3gsrOofuV37nBKMVFV6NF9DjtDVXynukicc4fmPPBJ8ahtIOyFJ_9eoOE6VgE_0J2EJC7p9KXkSgRIOJpGuRXwib2iSjMB9n2pBYjmIC05Wv2WfUwlv4B0DmJ_25mxip2I9NNwBX9tAIb9dVzRIScJ0uTfwOoUU1aG-7QJPsj8i9897__eLdBh227hyqxyXx-KE1svPIPp-MQu9g2qeNfdWzMrxUBhz2EAlbMuEGrZVBaOwwtvoPPwIOvhOPaf7ICIHnI8KYylDpQhgtXJyDAtMngYu2jNprD_tmu-id0oFxJjeTqcdQZeRvi3NWcZ-r19wcYgY_LgTUgbBUOFykRHGULr=w1224-h918-no)


..... the top was milled off and the whole lot then turned over and the lower face brought parallel.
(https://lh3.googleusercontent.com/iVVuQVRDhUx0ZEUdidBmftr2p-7FzFf-5q0QwusF2SeO_HCSbPQIEUNDERYN9wUZ1qq03AXk174cNi3hzbQM7FqlCtk72ZRcJyK82wH6FGG2azMNk4zesdmmyST4ugbZeQgvn2hF84HmmoRR1QoQjRyP4y2SRv6d6BmrdVIQpo3daKKUsKm19uSI3oW0G04339LoHuivx0d16IMW2L7Cv4UvYdJppf4_ts7wjvAE7txrT2srKV0J-PDFDbc6Cf8bYwqfSipRL2ipa9p8xYoMBbg7IS8S2LStz5hEEh8x3mmOb2znTokRiTZjRb78a5AOEfJSbwmWq1tvVI8BYLoQtpei_hDL53j3satDySC3u9iMWOsRODEtb4DEKNL8o6YmTghNhXRzfkyQTikXACCNojOwmhWS0BXKYZGfAlWuMleRNFyS46zb8UDxr4ON2sfcquL1lbpnBO46BDYM-UfQ6WY9hSMyTr4-hedja7-VxdOlVUfXc5-Elv0J9RyZZzgkOkEelZxA_uXpJlM_rt5i2eEFPFlihhHTTxn02TsOQfnN7XnTrZLFhwia6gci81zhIeDlq6ZH5x4fp5kCtb_Y3c9yucDEn_mVkb-whkuq=w1224-h918-no)

This holds a batch of ten pieces nice and tightly for milling to the set dimension.
(https://lh3.googleusercontent.com/ThJHcXffqlD7cfHhYJu0zrhxrFeH51qJ_pAiNATKG6bVy2Xtzfu0nYG__-6r1pYHHh3otJl7_OpQbcrpFs0lX2MKMLlwrnvsx3DEgtHba9BzhBuLnwxO6rV9FRsgVIPexvg6XzlDfc-4T2BwMGdphKKRkJ22t-f7DFyYKqi7vBOM46sbViNaE8qDcPrWyg81Jw1itwUKoozJmYXMDBfxf8vAE_2DWN7RjEl-0pDBTrvZ1pbyL1IAY3PidABIp5uhKuSWPvIfsg93s71zGKFwcNl4dYVLkPhe5LTKY1f6ryqhW0RgPZoCYTU7_16raXKa3fTrSOftvb80xKSMmL6TC3uoY2WstJ_3qA8BOzcYGCuXTLyyKPFLwBIgaWQYSf-j_ba5KGSX5RXcelwQRlliyw66KS8Pet_F7jUuqOywaCs3hWXswEmcnxJOugnrvO47ALfsH_qMnqW1zOyF9HAKO465iC74psARr2Is4q0iCNSrBKZAzlL19vUKgzOdCZmp0dq5i7ezwrUrsF_UaGIazbfnPB459l55DICj8VfJ0IS2NokYtVEG7vMzvRfNqrzys8AixM0qyxZ_a_bEqcST_iADTI6XDrH3-p-7MD0J=w1224-h918-no)
 

That's as far as I got today but it's another small step forward - hopefully tomorrow or Sunday will see the result of all this prep work. BTW I have a cunning plan for not gluing my fingers to the boards again  ;D but more on that later

Dew yew hev a gud weak-en' now :)

Frum tha ol shid - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on May 04, 2018, 11:33:41 PM
Wow! Nice shop!

But I have to be honest...as far as coming over to help...it's Sue's mean Chicken Jalfrezi on wild rice that I'm drooling over at the moment.  ;D
(It's suppertime and I am hungry.)

I notice other members have pads on the floor and have thought about it for myself. How difficult is it to clean the floor?

And what are the boxes at the top? One looks like an aircraft carrier.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on May 04, 2018, 11:40:04 PM
One question:  what's a "slip" (thing you almost lost)?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on May 05, 2018, 12:40:00 AM
Wonderful write up and pics Ramon. Very interested to see how it goes together. The fruit cake sounds wonderful too :LickLips:


Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on May 05, 2018, 03:53:45 AM
Hi Ramon,
on finding lost items.....

It will be were you last put it....... Comes from my Dad........My kids HATE this one!

& sorry Jo...."Have a woman look!!"...... This one comes from my wife.

Both are usually pretty accurate!!

Workshops looking way to tidy! The flywheel is going to look outstanding when you are done!!

Cheers Kerrin
 
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on May 05, 2018, 07:50:09 AM
Great work Tug

Slip = jo block


Smiled at your comments Kerrin. My dad always said ‘it will be in the last place you look’

Yes when I missplace a item it’s usualy hiding in plane sight

But I put it down to the AGE factor 71 trips round the big ball ,short term memory is well not so good ,but I remember names ,things that happened when I was 15  :old:

Keep up the great posts Tug always a pleasure to see you work

Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 05, 2018, 08:35:43 AM
Morning guys - the usual thanks for looking in and taking the time to comment :ThumbsUp:

Zee - Jalfrezi on hold till you get here ;) The boxes at the top is my over spill area for storing plastic kits. The aircraft carrier (Russian, Admiral Kuznetsov) is my 'White Elephant' - Sue called it that when I bought it saying I'd probably never make it. Well you can see the box is well faded but inside lurks the model near finished to deck level. An awful lot of work so far I burnt out on it and set it aside for a break - ah usual thing - you know  ::)

Floor pads - wouldn't be without them. Recycled from replacements from work they must be thirty odd years old. Small swarf falls through and they are easily lifted for cleaning. Very easy on the legs when standing all day and a good insulator in cold weather.

Kerrin - first port of call when desperation sets in is to call 'Hawkeye' - Sue by another name as she has a good eye and that 'womans logic' but it didn't help this time  :D Tidy workshop comes from an 'Army' mindset I guess. Actually it comes from an uncle who sadly died when I was just fourteen - army just reinforced it. He kept his shed and tools in immaculate condition - made an early impression. I inherited all his tools and still have all of them.

kvom - you may know them as 'gauge blocks'. Over here they are also referred to as 'slip gauges' - 'slips'. Expensive to replace, the loss of one, at work, would call for a similar extensive search.

The cake was exceptional Bill  :) - too exceptional   ;).

Stuart - can sympathise with you - if it's not significant it's quickly forgotten these days - glad you are enjoying the journey  :ThumbsUp:


It's beautiful weather here today so I'm off for a long walk in the woods


Back later - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 06, 2018, 10:32:26 PM
Hi Guys - despite some gorgeous weather proving a distraction I've still managed to make a bit more progress on the flywheel.

The fixture worked really well. I used a spanking new 6.35mm FC3 cutter at about 2000 revs to face off the cut edges. By climb milling the potential for the edge to split was just about zero. First side was milled leaving about 1mm to clean up on the other side
(https://lh3.googleusercontent.com/68tRv3Qqz9ssRMYg9NaStkb-XL_vSWNN6w0MFrDQJo6gTMnxwBMbi7KjzbzA5vzIxz_BZ-Jp2qH7O-ZBwhI6pz53ockOtNB1i7igysaWHbxKQNHsRUoP-tVohUAg-uh8ayQfNl6RxZeSfubbJ2aZ6a5k_tu3Z-nX-9rufvMh7xUZWugldgi98olbFmnf1t3uG7VTuwF2A8nUqUmgrOMjgl7SagcVuC3VL9Jfe3qoTe5nH4loNT1yyXQy7u0xAB0PRccgzKk6vP_rriI55uMBfMn0b1I7Ex9UmxkHOZk3D8MHYjXRYgK7bULbvvcx6VbGyNItGXRa3OjwBtCxrmIFHm8qSSkjKLynP4ZQpvgjHD-Pi3EPYl6uXvl8WuZ35p2aFZAUoYo1BR4RZQ62__ldyYDMYVsEEUdFIibK-pO6_yrEVgcerMYqwZ3NinXJQb6q15jRVxNPtOmY07INGJZ6XiEePZmfi3NR3rxVi8HO5IYwbWopUZDUwvFDPqUy5JMXyfrJIO_ecyuzTY8vlxr8Bn5lzJa6kDZUBWvdCiH5Va-AOxhYWoDujKxmfoJjeMdXV5Jz0jjlfREvucAA0cqXWTPK3DapPWZ6q2thNkew=w1224-h918-no)

As the first side of each batch of ten was done and all dust removed a length of sticky tape was applied to keep the machined edges together. Once removed from the fixture this was trimmed back to the 'block' with a scalpel then each batch in turn was turned over, put back in the fixture, and brought to the finished dimension.
(https://lh3.googleusercontent.com/KVJKeUmmnV-I1FPHO3fAbYWV1MEEY7SZMizx2CPPSIDnvn-s3_KH98WAq_g58NkPsB1eiWgl2OlzM5KxyfwRidoV5Qpa9cEnaCYWfqAALz8lZerAKmSyWa3UlgGx33jp4fGogDf02lVoGvYuvY0AQOThhH_T2bZzirkRgjPzW-nr4J4EX6YwQAXMfrEfMJcUa6wnlvJG6VXYjGsjxX6Oypr1J1-leRNl86YoLYR_lbcMILqOPt_04dPqD2IiGfjlqkVfAIDxDm6NPPf4IJxfpUXure_G73HXDl6WLd59EK8Cw1YxeCKQGyoC14DwNGN2gdH-BNimn3BMKwwlHl3MmQ013OnRraEVygYlvFywoNCod2ltEyyaLkGBMs8JhShooEM0k-JWR-iWoIsQlDf24IjOZ2LUMHGOAP7xFYpcuIcoexDYMsDK6bdD8J5dHFkCQLjr8_uAgaUegbbYkX7v5tL4kxmh6xd1-afZKP3Ynk-LlhYdhGGUE0kgCmwuvAi0_smjMq-32pMbYpxonsUeoTcf-pNjKPJQ6DWcfABEIdh8AUX4qrwOxQrZlxDboCbwynoc7YZIOaGpxyeFqc7XCxzqCnxiMEDo54np9d_u=w1224-h918-no)

Though the individual boards will be glued to the ali backing plate the full size had quite distinct fastenings. I intend to represent these with 1/32" brass rivets so each board requires drilling. A simple drill jig was made using white faced particle board ('Conti-Board' to us Brits) and a couple of pieces of 6mm square wood. The drill guides are mild steel. Each batch was split in two and drilled as batches of fives still retaining their sticky tape backing.
(https://lh3.googleusercontent.com/KXEzlwVa9OoiZCSNhP68P1XH8_CHCukWUVKTUWF3kZKwUZJnx8lez00rr4e4c8YL-w3w2TQtNvPmhlj-nl4CzuhYO4Ack2ch0Q_nKDFDPABO05oJxkmhfclL2B9Co3p53HuF-fnSAww2BNMNSClMf1-yZLTqMH2O6n1bq4dq-pKqHXFkqPjWTg6SdqZx_xZIUqMdz_jbz7HoIsQ7AMCCVIXMn3NaQ606STZTxkgsb2K6xcx3xQ20IqrLJME_tNZMRNH--oHcmjOnW8bv1u9_wXOku8qEJwBl7yAkyVMNtiHGd_UEg_6sPl2KY8Nfs0KtCe6yUOsWlyxF3ywC265e4MtofRHurgJKb16qOHdlacQlviT8Z0laMau1MlMX8Vy6GnRcTX_lQHYDpf_ibfjOFOngwy-UIJGNDr3JQZIS0tFRzdAnSwMqkF9DfKXqhGcKCYZEh8t0q3vAIOdCbdR1QTHg2jEpizX5U2zdnlOfj75hk2pagc3jLUba-TkPQ-xjTQotkiPDUSXEYQsxfme7I9v8KgpxIfcnls-SHhDVfEE6ouVWxi6SANa9_aVS7NNCoFOzLDbt_vuxSFBQNxh6wCCJoVEKI6e5t6MPnQIB=w1224-h918-no)

This is current state of play - all twenty four batches of five ready to separate. Tedious next op is to sand each one and give a coat of stain before finally gluing to the plate - won't be till Tuesday now as I need to get some stain.
(https://lh3.googleusercontent.com/gKEZ9K8KWcyAbFnvJPJqaSKaHFcFo6NqMETR4_28TXyciTiY_0aG1Lell1iM8ZCgXb1QjuT9scJO_zIcvGN8Fqfzd5QmWLHkfEq0V0gcu5LGsRT6ily8z1Hk_v3YI4TWWrqyFzWDWuYMHXpMmRS4YlrS8q2VB74fGWOdwN7r3cxYA4RePZldKWkEectdnIfPxwrA5ZDWg5SwSBrmlH1Msjy2vlE6nDY8a8stNyMvEmRSy0N4PvPDJcZdP2qF8WbCIEH5NRy6Llh8uXQF3qm5bF1aXtLQ4bUjhjLg7PIfj8Vbs3sT4pWFZ_IMQXfORV4gAREHzqaiIsk5KTMnRP-nBEeIngQb22fXKF9TTjelA5En7yP70JNbtBzAUh5h02FcHKiKxDO1XwrVi54aFr9maC8N3GOVVy8bx68zHIqe3Hgj17i9s60JLT3rlaaBUfWEZ5EXyzeISHfrn9x5LKRgpV_OWomXpWJMA1VLuHuSatj0uYTn2aBK7VzTTvvl0V37RE7Bv5NpTx6S2f9t9ixzYQjnKkThOauqtxK2VXmya3gknFFFDZlHBnlZBjT9cR0zICIMEGqQDCry5CnJ-SsLK46s3HOwbCw-X4Py0cor=w1224-h918-no)


BTW The use of Contiboard to make simple but accurate fixtures is a rollover from model aircraft days. Very quick to create using Cyano glue the accuracy achieved by such simple means proved very viable on wings and fuselages for the control aerobatic models built over several years.

Tha's it from the ol shid ta nite -

Sleep tight - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on May 07, 2018, 03:17:50 AM
Great setup and results on the boards!

 :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 10, 2018, 11:17:50 PM
Thanks Chris but unfortunately it didn't quite go to plan  ::)

The boards were fine and a dry run looked very promising
(https://lh3.googleusercontent.com/eHFm48BD9Ady6nTZeun4Okav_hG9pvu5ZiPfEzIIdMuw_a8MVgK-m6bfePwfCnCD-8TsYyRoS3RnfoaXF5ePCZyJfJd8_6DbQD5p-penOjVGRBWkNh7XnkGsdxQHG6imqjG6mdKv2UGnuUpwdhc7o_HW7O1438NvzNP2dgcfHKN1-S61DitRO3MSr4y42IeOPQ2bKxdns5xreS7mJt3OrWqrsLykqCeM6bR_mYuuCrRwhZZ61NidbATxMJDIUK35pGpeKSVbV-uA4kt3T1e6jFOK7nRyXqk6Wo-qynFpEsVpX2SMx6vsiQupKnAp-UuMkaBAq0BsuJhysBkyehNuWB-6Xbxnq0pbSKVrsou_sh4rRMIyfge7CDL0WAGG005vty__0gPTIiHkHCWcu-KbbEjXra01UDIZl8hL03dxF5ND86ggrL4ed6r49PtmbMsToHk4mwZKXwBN4xuRtu580XEmcY3tneppgkZlZzrgnZAPWh6NyykXktZZB98cN1KmyaWfesfL0ebre6wdnbgZ0kFGEM3hUdkqY5iyGWmo0rLdpItuugNmLmdRO_XQ9roX0PDnEaoHXfVyZ-5Qn_cT5gjC0DzOTj8mRK1bJ9FK=w1224-h918-no)

A board was stuck down with a slow CA at each quarter to minimise any potential accumulating error and the following boards in each quarter followed. The first quarter was fine but the second and third would require a very slightly wider 'last' board - each board had had a minimal sanding before staining and this did have an accumulative effect. This was not a problem in itself - the difference was minimal probably less than half a mil but the thing that really did not look right was the drilled holes. In hindsight the drill jig should have had a stop for the inner end of the board to bear against as any slight discrepancy on the width showed up as a radial difference in positioning on the holes. Tapers are not the easiest things to machine consistently at the best of times - with wood it's obviously even harder to maintain accuracy.
(https://lh3.googleusercontent.com/xbqHl8c6eMvMMbmjcfNXnrKJISO7SVKyGue7gatP-SfOj911iZapKAVXxmorMLVoiCILc5cD4eg_5eX77Q8KcsqvgLQ-ZoFxfuzLuIxlzO6SIFpjvHs-UOwiS-APH_bAS2VFeQ4IY5HhWZ7UfzUgmveyMkJvYZYs8lK_gPEdPRKEnzx8xvdK7iJzLoKv-heXwvIW-K4Oh5vfKj7PVqsIGjOMStQZTderOLhHcxXyBETYJrp7q5dneFD3t_cenqTYRgN2mUhFm1f93T6u6lTMEKtwzN9jgGBbWtSXKFWp_Qy6b1Lvjcb5PKaQVgOZSx8qAfi6L41SdJb8esQue0Rx18Kh0ZViuXBHd9uevXw7KCsrLS835zlyll7uNAgg_E38KsakGj8P1AMUd2aT1MsRJYzBLTnsrI_onfdDeyd0obXtUesQkz4LxaB-CosIq1xY2fFT_3bknZgojQNIepEgfSpDSX-s7nzzMnPntpBpmWWo8c-FkLo8vBgal9bPxqiK7CCX22FpP61MUahx2k5YYOau2oxwPl2iFzRSNJioNacEebPbaANxfJp5xqb24-2UMCqPrpM17SM3-yEHtdhsOb9BqmEwY46FWK3JEbJN=w1224-h918-no)


Anyway short answer is that after drilling a few to see if it improved visually I really couldn't live with the holes out of kilter so at this point the boards have all been prised off ready to have another go. If nothing else it's been a good exercise to test the adhesion of the CA.
(https://lh3.googleusercontent.com/jTrCJYtn92ukuCAYhTcFxQQ7ApeuWM8YgPuHdJQs6-LY3QYJQKg05F9ayr_k2KIruzafCdJ-CbMxgy3a2yrQ7KVYbsGUirifasEF9tU3cczho9M_NqAyl5PHCrKENqWTg6w-QpFTgo-T_NcRdiQJhplt6mmVqyHK8ZZ6slusp0ynq1DNLyFUeh4sbujhFLZR4TlciSk4R6wBigq1-RJcB1NLhL2hfQaR7chyLQVdHzHK7jKk53xvZjViv8RYwJvPcudL4Hhj220mQW46qrtOUC7IE5rHuBn61jk1eiz6P2K24UxGqZAYHklWC2yfx3efv7wgzdh9q07ub8OD_d8fG1ZNOQY4MEKOAiINjpnVAVqEpeQrm1aJWfqz0NV7qUk8IvICVcOhW2qO-e13pEVIieOK79EtPkL-vmOKuUje9fAm4xe7c1idOeCIA7Q_UQgfa0DToxzYDv5mc7x_W6naKczreF57c52naxVDyj2WvCgiSpXOybXo2nwqJIa-VeXxHGvSpe8aszczLRRxIVuAtDWk0gfa2_S5jk3c7DJl-K7zyNuxFp2W4ClrHL-KEesIcNpSkwCRWcHKpU_0I53oj6j1RdAIhZBG7NzIJB0i=w1224-h918-no)

So it's back to the start without picking up 200 quid and cut some more out
(https://lh3.googleusercontent.com/PWYR1n6SFzPjTCoLgYx78tfKLVI2flPSKqCKf0azBZSRpTnWZPE-eSjXKtrr5HENzrymhkCwkux-gOg3b3RtOJU_H-OUagNEQ2qRnI9_64rhm8IjM_b0Ks0ww3prI0JofmLwrvOjKQ1rqHs4JVOsXd90-OuNzO6bXx68I7PzqlkLeA0VDy0cW_XTf_r-zWCXkOW7jN8uPKkkF4Sh7RDnqGgaPnk81bPoW7yYqmtxo6Kx2EP1hg6U6dzBxslCKeGV3Tm9JephAp0oNWY25TZubFqg1SJxFQ8k5FPtxql2IirM016bSzgGXlK7IJHiC5m-ENuWP4B68MIlmRa50XQC_9w5xGKT6eYhS7fy3iTkMnCDBzRcAlveLTOCd53uhyHYRKLLZquF-E8iVgYzirVbnoLdYNBzJm0qxkvl36O0wz5J4F-_GVUVYxCJA_AbE9VivYrSKL6xn0cdztCA5257STDIihZh4hGSIkvplYWs1O-nsTBcHw6mtAFp7YK0RGsp70uewjDMDIKP-A3gmSaRRrXMTNbIxb8lMJmUUumm8qx1o11lF5Z011tpWppsZpO9HA-PPNIRVQZS0a8R7ARzcIasflhR0SGE3cKgF4WY=w1224-h918-no)

A bit of a set back but nothing really serious to dampen the spirits - progress is still being made as you can see ;)
(https://lh3.googleusercontent.com/5cBs5CZo18DXmzdMSr7snnSqRChcK-cAi_adg611wRJ7HdL8eB62XJpRu79Fn6YFJ5GIIk_YDDaTcKBDkRGDr5WkEGTRIJWy3xUtiIp914RnivatmPkhOZAU9PED8sXA6otowsJzLQFkP4C2v10ZeNYJoNEenxji2UIQ2V-zlnbBMMnGkci3nVmkfezC1ro2xfCYUMg2P0acBRwFzl6dpidvQyHrcUi1tFC4nZa0fZoFkJsz4laep0VzZ8A2NIwTn-pWfoVFfqGuU2boxQPUfCgw6CrmFnPyQxfwYhGK8ep1Mhj7yR84JcQE4IPMkx_IfO6c-2CN8dKHcKqsEjNDgYs3HYe3uS02VYJp9Q5xDG57g8JjKybcV5ZjTssGJmJBWNECEv-QaheguL__Y5sAxiCIiImk8r-c1TLGkYAA3GSOhJi0-qptIm6FupKDxHkfeLRX77YNSfD8uvRYJXvxyYipWsaTO46sC-UCtgaA8Xj42E7IWyfNHJLUNSvnRjo2iJ-oe1rsgfRMdiBriEisrXQkNfvb6HLeZ4Pt8-FTskUbT2goQhrfSjhcXo63dbTFRyB7P3hoN79ZuMrbM6GBplHZ3CMZk9-JYNoCDA_B=w1224-h918-no)

Hopefully the second try will yield a better result - I intend to drill the holes after the boards are in place and on the lathe using the dividing device - we'll see.

That's it for tonight - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on May 10, 2018, 11:23:50 PM
Hi Tug - always a hard thing to scrap parts and start over, but its worth it in the end. One of the ship models I was building kind of stalled out, was not happy with it, didn't know why, but was losing interest. Then realized that the line I was using for the standing rigging was too heavy, throwing off the appearance. Bit the bullet (cannonball?), cut the part completed rigging off and started over - made all the difference!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 11, 2018, 12:21:11 AM
You could have finished the first one and sold it to a collector of roulette wheels  8). The work is so nice, I have not much else to provide except  :popcorn: :cheers: :DrinkPint: and keep them cards and letters coming  :facepalm:

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 11, 2018, 08:43:26 AM
Hi Chris, Whiskey, Thanks for looking in  :ThumbsUp:

I came to realise long ago Chris that to leave something you're not satisfied with and carry on soon begins to eat away at you - the 'I wish I'd have done that over' kind of thing  ::) Despite the usual initial thoughts of how can I get round this problem without losing it,  it's usually much easier to just bin it and begin again.

I've only been able to get at this piecemeal this last few days - something I don't like doing but a much needed re-grouting of a freshly pressure washed patio are has taken it's toll - not just in time but in me - tiring work for these old bones  :old:

Ne'er fear Whiskey I'll keep em coming though not quite so frequent for a few days hence ;)

 :cheers: - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jakdaw43 on May 12, 2018, 04:24:47 PM
Hello Gentlemen,
I thought that I should let you know how I'm getting on with my Corliss Duplex Mill Engine project that I started last mid-November.
Having got the basic assemblies for the two halves of the engine together and made a mdf board base to mount it upon I covered the top surface with 'Formica'.  My plan, if it works (!?) is to cut grooves into this to simulate a tiled floor and face the outer mdf surfaces with mahogany.
I've made up the Harnell governor and mounted it up onto a fabricated plinth so that the Corliss valve rods to the high pressure cylinder go beneath it.  I had to experiment a little with the rate of the stainless steel spring in the governor head to achieve the sensitivity of movement to the trip blades, but all works fine now.
I was supposed to set aside the project at the start of May, the start of the locomotive running season, but the desire to make bits played on....However, I've now ordered an acrylic cover which should arrive next week, and 'senior management'  has granted leave to put the engine on a cupboard in the conservatory.
I expect I shall not be able to resist making the odd bit when the rains come....one of the few benefits of the variable weather in the British 'summer' !
Thinking ahead....I need to simulate 'monkey-muck' insulation on the  visible pipework.  Have any of you any hints on how to achieve this neatly on 5/16", 7/16" and 15mm pipes ?
I can't say I'm looking forward to timing all the Corliss gear...any thoughts ?
I've attached some pics. of operations and work to date.
All the best,
Stuart
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 14, 2018, 08:30:32 PM
Hi Guys - just to say I haven't been demoralised by the set back as you might perchance perceive, just that long overdue household duties have  taken precedent for a few days (and will for a few more  ::))

As you can see I am back on track though - another 120 pieces have been cut and stained ready for another go  ;) Incidentally, that small piece of ply laying on the box is all that's left of a 48" x 12" sheet of 1/32" birch ply - bit of a wasteful exercise for sure  :(
(https://lh3.googleusercontent.com/QFTcr-dgKwch8V3t3mUAjBss-MQ2yNHRFUL-MEEiNWbCscFCIwhavPYnjimL6lJ2SO47GQS05b-DTMEZZqVww6_I4J7a9lHOrqFYMK1RiYND03FFncwv52GPKp7iIdHZezmXkZwCwtj3JzjUMlI3A7nw0g-7uFM4lG9cHfQj9XnzNFkosBmh-2cd4bbsfd6fxqSn0nhxsUg5zgf2PBcdYARcuzRCxQbTjaWh2hvYwwapcZu48fm2cpb8NKpJR_vPJnyIWh_IOz8tfX2pWIPn4f3mWZSl-KWsau9CcBXXgtDVg4K1py1efZXXPowDmX1_yEIbXIf3g1jxXSnI0HR8fcFDAc37v-H91IjDIMRD0iqKpIA5pjUlhMZCcmztffRstzT0DXHsNjeAODZFcsuc0lSL3_n1ZPA2q_YhR6lilD3Xe_WlBkmkyAUho53sM4YBYkBxVluBMikS9ksVKBRIB2T_rK0f0EJT2avP0XNnkKsGS45IIOpczNcWkl-SnnmovrOS6BXx7CsOPUR8Z5q1QSe9g1j-BIeIe7HcSk75ao5QgwmE5XZld4_CUA9eK_IMm3zoPsoRYn--Fmnu12IvqUiXQuTPfmaYP07ZEHfq=w1224-h918-no)

Hi Jack
I haven't even thought about valve timing as yet but I am intending to use Miliput as a means to simulate the pipework insulation. Looks like you are well into yours - why don't you start a new thread on your version - I'm sure others would be interested to see what you have done in more detail.

It will be at least a fortnight before I can get back at this with any degree of continuity - I really don't like working 'here and there' as I have been - so have decided that now that every thing is ready I'll leave the gluing until I can continue straight on with the machining.

Regards for now then,

Back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 14, 2018, 10:05:28 PM
Good Lord, and I thought granny Douglas had a lot of quilt pieces to keep up with whilst tending to her everyday household chores  :facepalm:  The flywheel is gonna be awesome

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on May 14, 2018, 11:08:35 PM
Ramon, we've all been there; and though you hate to toss it all in the scrap bin, you know that you won't be happy otherwise.  Looks like you're off to a great start with this go round, and you'll be happier in the long run.

This build is a delight to see coming together.  :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 15, 2018, 05:51:16 PM
Yeh, well practised at 'being there' Craig  ::) so no big issue here. It's a true old saying that those who've never made a mistake never made anything.

Thanks for the kind comment and looking in - you too Whiskey  :ThumbsUp:

I'll be back on this afore too long - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on May 20, 2018, 08:40:31 AM
Still following along and enjoying the pictures  :ThumbsUp:  :ThumbsUp:  :wine1:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 20, 2018, 08:48:41 PM
Thanks for looking in Roger :ThumbsUp:

Doing this from my old (and slow) laptop. The Windows 10 no choice but to do it, we're here to improve your PC etc  'new update' has totally and utterly buggered up my PC  >:( and I can't access a sodding thing, not even the bloody desktop. I have no knowledge of how to sort such matters so it's going to have to go in tomorrow - just hope they can fix it  'cause losing all on there is going to be a blow I don't want to even think about recovering from - fingers crossed then.

Regards for now - a very despondent Ol Tug ::)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on May 21, 2018, 11:44:11 AM
Hi Tug,
 I feel your pain!!
3 weeks ago used the old dinosaur to draw up something turned it off. Next day went to do something....."please insert boot disk".....oh oh this doesn't look good!  :killcomputer: :killcomputer:A week latter the new all bells & whistles was up & running......having being somewhat slack at backups.....well that will teach me!! One good thing about getting older you're not sure what you now don't have access too!!

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on May 23, 2018, 10:03:03 PM
Tug,

I hope they managed to sort out your laptop.  I had the same problem this morning and it's taken me all day to sort it out with the aid of the internet - seems to be something to do with the update conflicting with a third party virus checker - I use AVG.

On a more cheerful note I've sent you a PM,

Regards,

Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on May 23, 2018, 11:40:34 PM
Incidentally, that small piece of ply laying on the box is all that's left of a 48" x 12" sheet of 1/32" birch ply - bit of a wasteful exercise for sure  :(

It's only a waste if the learning and/or gained experience is not used.  ;D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 25, 2018, 08:27:59 PM
Hi Guys - Just back from a really super short break with Sue.

Phoned the Computer shop - apparently the Windows latest update caused the PC to crash >:( so well chuffed there to hear that. Whatever, I'm off to Cromer early in the morning sowith the bank hol coming up I shan't be back online properly till Tuesday - this old laptop is so painfully slow  ::)

Got your message Rod - no probs and will reply as soon as I'm up and running again next week.

Package arrived safely Dave - again that will have to wait a couple of days.

Whilst on hol went to a superb Stationary steam museum hopefully I'll have some pics to show too.

Thanks for looking in - with luck all will be back to normal next week

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on May 25, 2018, 08:37:22 PM
So, sounds like you are having a smashing time with your very special lady and due to technical difficulties, beyond your control, we crusty lot will just have to be patient until your return. Damn good one on you, I would do the same thing  :lolb: :lolb:. Y’all have some more fun.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on May 30, 2018, 11:54:20 PM
Hi Tug ...just wondering about the governor linkage ...? is the rod fitted with a left and right handed thread  and does only one end need a locking nut ?  Good progress btw
Willy
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on May 31, 2018, 02:22:17 PM
Hi Willy, Haven't got that far yet but yes I would be doing it with L&RH threads and yes it would only require a lock nut at one end.

I'm still in a bit of a limbo period - now on top of re-grouting the patio - boy I don't want to be doing that again, too much getting up and down for these old bones  :old:. I've set myself to re-felt the shed extension too before getting back on the flywheel so am waiting for a couple of days dry forecast as I need to let it dry out once the old felt is off - looks like that could be later in the week.

Been over to see my old friend Gordon today. I may have mentioned before - for some time he's been getting real bad dizzy spells and collapsing without warning. 'They' can't seem to find a reason and due to the worry of potentially collapsing at his lathe decided a few months back to get rid of his workshop contents in one foul swoop. He'd asked me over to give me his collection of BA fasteners plus one or two other bits and pieces he had left.  Lot's of sorting out to do  for sure  ;)

Just sixteen weeks or so to go Willy ;)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 17, 2018, 10:53:52 PM
Guys -

Mice, Men and plans best laid have been the order of the day for what seems like weeks now - one step forward two back scenario  ::)

Patio's revitalised, raised beds re-edged, dahlia patches dug and planted, tomato's planted and shed roof fixed. Age is becoming a real factor and to coin a local phrase 'Oi don't bloody loike it'. Brain still thinks like a thirty year old - the body rapidly reminds me that it's not  :old:

Apologies for not keeping up with what you've all been up to but hope to be back to some semblance of normality this week  ;D

As a well meaning friend from over the pond would say  'Y'all keep callin now ya hear'

Not quite (yet) frum tha ol shid - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 21, 2018, 10:46:16 PM
Hi Guys - been a tiring day driving to pick up a new yacht - a real beauty so worth the effort but no time in the workshop today.

I have got myself back to square one on the flywheel boarding at last and did this yesterday  - this is the first side, all boards bonded to the ali backplate with the Slo Zap with a drop of the thin Zap wicked around the outer and inner edges. Boards have been stained and an initial coat of French Polish applied.
(https://lh3.googleusercontent.com/TDPQRaN-S--Y3bQCV1i798hNvRs7dXvwgqhgjatIjhv4uIDxeVF4FYewQokZcbBLoAiPopVrSCZF56T1MWhV08mamcmY1DuN0T_jYQyrALtIgV5D-iz8qsTnmIMPVhT4zXcwQzBSvU4ZjaNrYmFI3hp42GxvaR3SZ09lCCMQFpgau6VFpfpJPfa8POQZScTFIIMWzzwEwH-7ztHAsJve9p54YKHCMtYspx3IFkqBYVWmYOEQ0cZwNYbSfk_q3JHYYXhcvfnemW8drs2_bi_kjupJlWuOOq2wXs7DX1TuyprI1FKMPRGati1hT3D5Oaca7vuNqlAX6J8I-rOlk8WKxSQsCnUxCsjaUtqBpewsjeBiAUb_2zucPppYVpF7u0uPufRpSmU9L94An9Fdx-UakvyWkMYIsbM3H5IJBOwU_cafgWtrDIUM_kB2h61WWEyotIZoJP326gNtqID_X3b17hm9Z_TcMkiER4Tmd9lP3lWUXXfeQgpGi1FExlvAeuM-sNDNEf3BrfXsLp3kelDMZOX9RBtzgUvcTuFVKHvQppq6geQwLgibzmrBF8GW0TbYbM3v5fvS79pqBu9m-uw-IqVi8FIh87MWfFcs2vh3=w1224-h918-no)

Now too sure how trepanning that to size will go as that ali is pretty claggy stuff. Found that out when drilling previously so have decided not to drill for rivets after all in case of drill breakages as before.

Just that one pic I'm afraid but we are ready to go again  ;)

Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 21, 2018, 11:16:14 PM
Good Lord Ray Dar, they is a whole bunch of planks in that flywheel. Gonna be beautiful

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on June 21, 2018, 11:56:36 PM
Looks good Tug, moving forward again.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on June 22, 2018, 05:47:04 PM
Really nice looking, Tug!

I know its just the camera perspective and all, but the picture makes it look like its very eccentric!  I'm sure the wedge shaped planks really add to that illusion.  But it looks great! Nice fit all around.

Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 22, 2018, 06:53:57 PM
Dang you noticed Kim  :ROFL:

Well it fits the flywheel ok - working on the second side now - more later

Yep nice to be back on it Craig  :ThumbsUp:

and yes looking 'sharp' eh Whiskey - ol Ray Zorr

Regards - Tug :)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 22, 2018, 09:45:17 PM
In Tennessee accent he replies: “ You just ain’t a darn toot’n Tuwg, Boy I bet that sucker is gonna look real good when it’s a finished. Hand me a beer, it’s Friday” . BTW, Lou wants to do some patio renovations this year after we close the pool: would you be interested in a trip to Tennessee to lend your services  :stir: :stickpoke:. Keep ‘em coming cowboy.

Luv y’all,
Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on June 22, 2018, 09:59:00 PM
Good to see you back on this one Ramon. Hope this time will go much better for you.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 23, 2018, 07:25:23 AM
Bag packed, trowel in one hand and knee pads in place  - Hell Whiskey you do make me crease  ;D

Yes Bill, it's going (much) better so far this time - I'm hoping it will all be done today so will post some pics later - I'm now off to 'tha ol shid' for an early start

Regards - Tug

that's aka Ray Zalarf to you Whiskey  :D

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 23, 2018, 11:26:36 PM
Well it's been a good day in 'tha ol shid' for sure  :)

Got the second planks all bonded to the ali plate and had it all turned and test fitted at close of play  :) :)

First up on these parts was to tre-pan the centres out to take the hub plates. The HSS tool was not quite 1.5mm wide ground with a little side rake and the trailing side ground at an acute angle to thin the tip down to about .5mm wide. Once through the wood method was to plunge in a few thou at a time then face toward the centre a couple of mill to give swarf clearance. Once break through occurred then the hole was opened .5 mm a time until the hub would just fit. The ali was really horrible stuff to turn, real 'claggy' and built up on the tool very quickly. The usual lubricant, paraffin, wd40 etc was out due to it potentially soaking into the wood parts. Just a lick of Tapmatic fluid applied to the tool had to suffice with very small cuts and slow feed being the order.
(https://lh3.googleusercontent.com/DZVENnFdWWtkbOYOJ_L-YQmiAGFCpkyy-hVe6W8NA8b5RAgY1lcNSlus4l6sehGSO4KOxSKe5MWJRotT2-NTENM-CFcnk104ER2vOO6SnuTfJh348FvXZmhfrpSA09VNrF79lGcN8z2YCnFFubfY473D3OrQW1UBQ5FAV4fdVehS0uBxUP21vrKZBk8--Bt6J5cm62FvmEBXUW0Spu56N3YA-DV8-0Xh_f1G-xmMyj_76wSXEkA7QuUfq7VuQXG0NKBTsIoTg0G4l5LNTcwbvMbYBSKP8aYkvrwNE1kHyBvoFfJ_Vd2vQ_mwSugcLW3CTx80XTucKGxHuDH-dhJAbONO9YpUU3Zm29uQpOCzg4Xi8KiOqv_is5wwIt9C1Ha2xGKp9igvZj0YSyMqRcRdT5Mq17_0fiyK8r1X0Sbs59RqZ4rwa76RZmbu9iT-Q2bkxS2eYG5ZE6yTAGKYOe95KAmODSFlvAoHJPYB-8XxsAIgKjBEbDFdvYg67wuomDG2-mNt9eSHOx5Zzl3XbOQBS72ZnR0mQQjxnXDkfWVQo_4o7t5BtazK8WkrOtnE_yRfo0f4jNtgnUKJgX6EF50e-sG09d84lyPoGWMMzPy9=w1224-h918-no)

A backing plate was turned from particle board with an ali boss that located over the dowel and aligned the part. This was to maximise holding pressure once the screws were removed. A sheet of copy paper beneath helped enhance the grip as well. A degree of anxiety was there when doing the bores but nowhere near what there was on turning the outside once those screws were out. Another tool was ground similar to the first but with a reverse profile for cutting inwards.
(https://lh3.googleusercontent.com/hEaIFPXJDViMSbSjh__o0JlLHp3qt3cyQ69lHSFM5q8274ZzPoytsEroATAFedEfvBerS-ONaiSWNcfRO7F_HeadMTQboSiZjqVBzZzVTmDQ2hH_x4PBQWpsh2WBGcWq4s6Yr6mF0hDtdYxse83X2Z84H1jLAaofOepLF01t0TrPC7l-JZ1VxoPO_9aUGPG0jR7XC6SJxrq77V0fvi290QkmvToJqW33Ozk0YaYUrhVPK7_B1KqrfE5R-k6fPDNjclk8bN8FgOgPkwmouxxCXvj7CZcgrVW1p4BXp0iRsaqD-P-32dXVYzC-mjxdgO3stJnJpBprtjY4GJrqC12Z4barYueetAotCQwfF9b7H1NVYkqSHdRAjeFyuC6ag4up5jq52J7PSdOgD0q-eyE1KhN_wCqcuzGjrlcrP0yq99toUdLLHjd0GdRdtCS637182K5AFsfwtNJ1pwTLJ1otnL4juPERxtjEBkqcXkGuslw56_lEq_5K07viA-st_duRud_vM248vjIXW1MdDrqTnFensSjGTn_IT2aRedJO0-9Ydf1brI3pfTQX0LEXtOejx5b98dY4LhaQim3FSjHSOHjyofV-wB2gSDpKI1DX=w1224-h918-no)

This was the first one off ....
(https://lh3.googleusercontent.com/MKVYLisw_ncB99jQCoHivlgaKz3-JAeVA2OrkwVWFDHS8XLoRt-uTFFxan9FQ8P7P9KQVuW4a9b9ob_24lieKzma-VGgHQ3w-toA7Lk6pYEQMeCQYgnIfnlRXpUIP8qG8DMED7qQdeshcmEVzX3bHEb2dXSN7wZ57mdL3Teh3SPwYfjZZO7vxJTeczh0LoSar_r8_pSWUHpDbpIK8sjiHiDv6EiE_vCmOMLmEYPMPW47WDBekM7imlYAx_5DofmbE6_N7R2dm5387GZKQSlcIcT7jpBPXNCpU97Yc2phInw6CpXdsYBTphIGJwaTtJt95eg-z3lla9dlW09WgHEgaxvnGDZ7JSuUA11ReRLTHgL3exdaj3LvmHJ_mxkYx8xQRLByr3E5z9W1_REthx5SF8RU06NhAWuNnEjysk5PoF4yjT_YYABNm-nYBBHOPgmLOA2-EatGFjMzVeUvRdS3Qg_l_mo-AiOlQ_4mEQ4Elb8ODikLu7ryiMcjlZtYFvmXdLQr-QGkZHFqekmt_NQ3kvamYJZYusv1K6VCA5mlVir01z7QnCitQmlxTUI23vfSDtzSSFDdLbEzU33yejMkhO6u9Sv6IuKP7mU1qVp_=w1224-h918-no)

....which was quickly tried to see what it would look like
(https://lh3.googleusercontent.com/eXsXwpvtZ_J5WwB4Zi4Hp0S7gq5EIK5LFjLl_uXpa7uTo6am7ENSU4nzNK7_Q0CxcfoHBSYRKtzfQopk4eCWuG7AQsQQZA_vQ6La1o9Oh5p80nRyZzmCcB5wxAhEgpgyrM2uqqlNDSU6QRSwlDcS7Ps7Q0qcGfsnp55pEWaFziMvlQfz-DBZx872RSWo1ndKQIIR8S8YuxYho4conEgNBvt-CxgQZn0FiZ49M-hB2eWX8og92ZdHsIzHmx61NyZ8aJ1_Rsdh0qffaYAAMN7FCY3k0mEmWsUe01P9m0RInx0TTwfrNnjbNv4WGSnjW2MdEkAGkLIItFwawrkn6lMbL4kWsejEUhz7mWSr7K22vy5lG7LhBBePUXAhJU75ZxpWknM9GRSTcZoH2kJN6S9rDRvxmw1HnJwXRHGIj9VvbWuNAA9ZEeaZAQ_6_fhbUbrw3xeEbIBB_CRCFIUQWnN_GDBEetFLooYSnNU_u-pzEngVLj6Lm0FuFUWKP2NouTqpMgTmjv1rflmK9dTTgiR_7Q5VRzYkBP5KcsT_wOBatkJ9XEbVOn_7A9GlcnLPrQbE71i4fNhDOacaVzILC1gVuPAzcnjXeCDFv_4OD0IE=w1224-h918-no)

The second one set up today waiting (impatiently) for the French Polish to go off fully before machining.
(https://lh3.googleusercontent.com/k-f5Lerx8b4WGKrlVAaxNmvAF28S3QrWeCvwF9N2BstKqUGOEhyQDKL-jwM3k35mRjamG-gpXgGebGcX4Twn-ntYmwF0QpK_xw540Vu8TocD4-ZYEDLk_fBtxZRhPwRp0WDWHNQFlpmCB59jdv4_B6Q_ywFKqkK-fkTM0Q7NfsHyWu0_BL0bLfiYb6bldHfaQr3qzjoUg-U8icxLoOGbjVnprwUAfKBdh1fDDWByTqggzHcOCLOo9vSiQxyEmeqW5v8CS5IIiWqVsK2OIlJxkxbH9V2iRN5VCujzI1JFWB_ABsNFHAKThDMGdChdgatsIeYIr04jpG7aUJauw1pg6_ngTm8YZ9y1ePB1U9P7hrsi43AzQ9EkXywHGv4dK7g_XFpaioLNRrCKlZ1-jltu4GlvRgzBpjOOQI0b2NCeZQf9OKA2nhL-6Kr7J9-oSdRok5Dgh5u9x9OouaKU1xsArp2GK7si79uq3C-7U4nxv8ePT8KxTgNmMjIV235kh1DNkxQHIeAhCmkjSmLRBCCSCC95EtjcUzD_BA9I565oKrIxHPdMALoA2z5cKechB8YPxNyopBDlL92BYnK0peF0PX1CFHkmwu7xR61vhbs6=w1224-h918-no)

Finished parts ready for a 'dry run'
(https://lh3.googleusercontent.com/4lvlGsrlM5dqPudrF3u4kj4iH64K4sGSWaOEogKscvSilr1cOLlyymfsahMTesY3kw8jCfNeQQQjcssLiq6vKTFw_fjMqIG8yFaY3Lliu_ekZVGE3GlC9hMfS-kA-chEICWREt7X4FqnKaTl0tPigyavoV5ZihvfdQtuJZyw610eT7Z1GjnRmRvgfwI3rFzN6EE2ArPXf-a28hV0Zo730W-m9X6hshSLAskSnX4Vn2G0LyaYNKWV__JdGsdo4fbS7Xotyvj2_PPxTMz7yUtYwVYEGfR2VA8jscs9XjmJqiEZZYB3-T4OYG80jDOjUxD6ha_C5Mu63MU3F-HKIW_0C9lb5goA85mInvyKBm4VXJWi5LZLkDahETuN67jsFYZl2u9fbQh_H0LyAvTtMzubvWoMBTFJxrT_J_T5pSFIdwXpvUX7SXwIFLCbY-1YNK1YfWbo5c8imjzN1bT-CK09vnu13rHIZkWOP9eAFlS6xIf_uybrkf4sqkh5SpEcHey_2uVb1x2aw2mVXBMLw67V51ywb1-sP3_ihcwj5-sngXJ6Vba1aBrr5D2yDJGtoNx6AU3L8p3fbjifgJtT_tjY2GocMveFJwcGUthUa94C=w1224-h918-no)

Closer look at the parts - the keen eye might spot the faux split line and the dummy nuts/studs now fitted to the eccentrics ;)
(https://lh3.googleusercontent.com/RtGuXwQlFUJUYi2YKhElaON2OPc3aO2IyUSJBqGXN3v_SdlPgGGlJ6exy-YnH0QNVCpFnZgfuJPLU1FZKfANiHxCjwYuUr13EnnjabN6RoqvpUUlGE0xa2hYX7y9DVN8uF0nC6gdMnN0swRtUpa6-tdGZldeBR0BWpwBs9vch2kyJUjQJdzli4deA2kwCR-yLLgV5bP6fiU2LRp3jtZ2TF8_36EoifjSR40KJ1yy0dGlPpnt4CJuROb8QzaQLPM7rOpXBWSXSdYhRS1k0JgifzgX3wJkoV6Q8Yb_TxPwzJ5U1elhoDMKPlY2FXGTgxf_Mvh-T-SknIpc7c2_soyo56WEW4oaOxTrx8dubRd-Be8YlIIrO5OaXM2SL2rIMGu5uq7qeQWwhAHfeCuOOFFNnmUKEgYwyX7FHRvehu5hRoZDnWyAcjewplT_rn2vm5yGrcF8VBvHPw5YS3N-Vfbv7ogSpVLwZneV_2I1B5NZxqebw6wj2CfKAgfENjjl9Sv2LdVKlVSdnlE1mCLDbSIBAxwvWoU7BPH0n0KcPysQUocJFnfY9EA1ucEHQNEtCiT6skFO_AUsQLYE4BC_rKq2gZkyxhN2VAIxu0TZK4g0=w1224-h918-no)

And finally that dry run before getting to grips and finishing of the crankshaft at last
(https://lh3.googleusercontent.com/nWhJuvUQ28CMQxhpkWO5twlbgSd5eFXuMNeL15D47kYcpJg39TAfo4T2hLQS43gZnGbFDSDeTBtz5cKisEqajJ2CZjO9I1JJ7M767c91NRkC-IpqjfCCq86XXYOk_i9oGc0JfqDhPrx_Yt8jYSB4A3UfF4g5-hd9osvqMzVw_Iz7kPwag-pnb2kYPdDiDtPow9UDVwjRin3mHSUKv82wTROWprnh3X468XU8MWMFPy1KQxijhsmtbGb6zu5Pv-pQQEnvvR8vzYBcIRjpyNCQBJUTvoyxPVvmnLFkN9VKvNgaKEj2X8V15NCI8Wo6MROXHZxHSe6xX17z8QSF7zbeHhVkLom61FUdyzYpgJOzgRF2IZukJQsmfsRZxAWjmE9OJo2JqQuLweph5fI-tvTrKPPKLPGfHsJhda9_BmAqjdndc8g1pAejrggStFEbJBp8Wkz0jfJmp0-qfbAmLqtjeT7vAh6ztTvsSDuAQHOCwa84TpGcrtQBX3fQPPJnxUDxL-JeQFgmh4QFt67v4J9LOsSd5UXW05lvGNse-Ge6y-rmjBzB2d3IKqxWLjLGprH-hGS3HMy79M0L-dzEXFgYLJf0SGXTdoX8ND6vru1i=w1224-h918-no)

(https://lh3.googleusercontent.com/s1t1wOgSoDlHFiDq-jliJxrM9zd7_2IBaXkyiEtL6KWD7AgQFrQ7zp8LswVaYkkXUwSRtMMzd9dDzugG3nh9QANHZjHQGKI0aNMMJoiju7bhGGiu1PrlVAAVlYr73AX_Ot4S4mX7ot1ZM2z0eq4IwFQL3tBvstf5HRG-cD2grSzlM9AgwYey7ywRbdYVF9NMjHImdLxqWyOIAqG2mrIrC8s_MX2Tb0HM97e1ctqAzhtBUX0QAFCkFo2UChp-_FNDpz2-Muyv4bHnBH0D-DS9wPPs4HvjVHBPNItSu6zvRzot_2tIah8YSzSBam3wWRhrklNFqX0w3AQpZKWyvYGbA4LRu05ZiRilVorP5V-a8uICJLVP47KDpVacIv2UkFHwYh8MuLWanntIU6fUqc3_87fme6K-1Qc1bXnwfpqkKqEcMJW3Pf2HZ1IacVundCngBmrCe524rgPAf2MUuk9P44hoZ_UG49pFVr3mgora3GTrqb8Vi2OlXuqPJed6do9dJq3B3Tr1oFPES_SCi1tDFFryMF_-qxBU-DyvG-XqNWlvFJZMo2sy6JianO2Bv8h7kLQLbZ0J1nDb8MpjtzqQ1Pu0tcmJOjBhmK7XRNrL=w1224-h918-no)


With all the household stuff that's got in the way for the last few weeks I'm really pleased that at last I can now move forwards on the rest of the build. That set back with having to ditch the previous attempt was a disappointment but mainly from a time perspective - it's good to be back on track so hope to make some steady progress from this point on.

Regards then with a successful outcome frum tha ol shid - Ol Tug  :) :) :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on June 24, 2018, 12:09:03 AM
Wow that's beautiful Ramon!
The boarded flywheel is going to add some nice detail to an already spectacular model.

BTW How do you tighten the nuts in the eccentric cutouts?

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on June 24, 2018, 01:41:33 AM
There's only one thing to say:
 :ThumbsUp: :ThumbsUp: :ThumbsUp:  :ThumbsUp:  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on June 24, 2018, 07:12:35 AM
All turned out very nicely Ramon, are you going to add the fixing detail to the planks now they are in place or just leave as is?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 24, 2018, 03:11:31 PM
Hi Guys thanks for looking in  :ThumbsUp:

Been out all day so far enjoying the sun/shade of glorious woodland  :)

Dave - the nuts are dummys - I'll explain more a bit later

Jason - I've decided (at this stage) to leave as is. Main reason is the claggy nature of that ali, it really is a pig to drill with a 0.8mm drill and as with the machining using a lubricant is not practical. Rather than risk a broken drill (for the second time) I think I'll leave this as is. I don't think it will be too noticeable, especially when running.

Time for a cup of tea and a start on the crankshaft  ;)

Regards for now - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 25, 2018, 02:31:37 AM
Tug, looks so damn good, I ain’t even gonna try to be funny. This one is destined to be a true “showmans” engine. Give Sue my regards.

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: jeff l on June 25, 2018, 03:36:00 AM
outstanding !
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on June 25, 2018, 03:48:44 AM
...

Dave - the nuts are dummys - I'll explain more a bit later

...
I'm very interested in that one too - all looks wonderful!
 :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 25, 2018, 07:49:17 AM
Morning guys, Well, I got my cup of tea but didn't get much further as I had a surprise visitor in my old flying (model) mate who moved to Cornwall several years ago. He's up here on hol so called in on spec. It is said that when we get together that we are as bad as each other so we had a lot of noisy and hilarious catching up to do - you'd have to know David to appreciate that :lolb:

Did get the crankshaft trimmed to length beforehand in so hope to get it all assembled today - pics and explanation later.

Have a good day then - I'm intending to  ;) - Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: fumopuc on June 25, 2018, 08:21:51 PM
Hi Tug, These flywheel covers are beautiful. Something I should keep in mind for my large, may be, future Corliss project.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 25, 2018, 10:24:28 PM
Hi Achim, Nice to hear from you, thanks for your kind comments  :ThumbsUp: It's been time consuming and a bit tedious at times but the end result has been well worth the effort I feel.

I was hoping to have the flywheel in place today but one of those streaming eyes and nose summer colds has set in which tends to get in the way. Whatever I do now have the crankshaft finished and also one cover board ready to fit with the other not far behind  :)

Re those eccentrics - you may recall I decided not to split them as per full size due to the difficulty of tightening the bolts. However the discussion at the time lead me to think I should at least try to give that impression.

This was how they were when first done
(https://lh3.googleusercontent.com/ls28_Ftefrt63cQKZX5i7WpNe-FRxzwX9z6m6IfZ3moUy9QZ7Wgc3WSs5JKsXVG77O0XsDRCcpUKMhH2axL_LGAx0AJlS5qYynx-8KKe6aPzCg8Wbr0q0bTmUbxXpdoRxFj8ysTdFIjMFHSyMzhIM8e-RVhA2gUMuJxK69SurhleGy1PoooDAqhwrR2TMBau9ISn9iWpvDz7ciR0Es8G9wheLDychDev8boSDj6W7RG2b2S6RC8cJXIekymMrzsnZyu28zB11riKkMda8hwlfn2TV2jleUq2j50VyUzR8f9JMalqK_EuYMpHZ9ypmskjJPTEK-RzLvxg-MRV8g0nKFdcsIKYRPVS8suuiKWjwETBe576l51q3VfntOXUFQc4uoRbI8qT-UZwKUFPGH3e2NeJ0YkJ86I1X1NLldomfdUrn8usieYbZzpF159o1pCgBpf3RlmzFECsQWnhwW-S2W9wsJdOm2f8f2Rcpg1Il9d77ONlhuux2hXG81CZqZCHpk8d-dsmSmgpt_KPIBJaPJmltgXvICl54unNYKjsEKDt7H4mYnu0WfiW02VERzzL2FxiTAvRBuncLtt2yCTXsrSVmKXM3teS5nTkwH14=w1224-h918-no)

I don't have any pics of the op but first off was to hold the eccentric on a mandrel in the lathe and setting the two flat faces vertical a line was scribed using a sharp pointed tool on it's side across the centre line. (Edit) The lathe spindle was locked on the bull wheel then rotated through 90 degrees to scribe the line)
The corners in the cut out were then filed to allow a 5BA nut to sit inside. It was then set up on the mill and two holes drilled through the rim to break through into the cut out.
(https://lh3.googleusercontent.com/cX2VSSr8NPnhw1LEksL2K8Y8tq0k2qCk9kgur4QCO6biX-Gb07wMwFytqqwnjQ5jyRvN3z-V-0qHjPKRHjZ8MMu4IaUEPccdoYl6amw3KO_Fagov_rl-w_vndNOqD3Gg1O9enQupz3TmkssNn7DxvrdR2tX9H2TN5bTmGV39sks-wZMd-o-jnJhnr-_JyZSg3E1U5MsRPuuTzLOBhu3pyNKlGwL_hA-U1YAjmHVJFfE6drGovNbp7cQJjS71seVmOAMNgm5LdKhE09n9Yh0baYsstMnWYMgkmG_FVYic4zhvB3qqlKBF_qXcZ3kLo6IPPmgBCnWCr8Jc94MAlL-LuaBjlvEA_mHYYo9eRk_EXHgZq6ZX16yglVZhm11g3MjGYz08twkskyDkjMMnpPxwktEsehXImeVxgKzPWdaJt37SIvNtxyeLbRJBoyQKZJH99kvU5jfyPQTa6RJ9tq5i5jpxixNBmUF_awhiDbGE1iu_Ony6A5uMCA9jeNp16H0zN8xZQ79kIS8fOsdUNmSTsnbVz8OvHLYkdRVyAZUFT4xO9GyXFZ1_2rp1KZd6up1lFgLGkHRiIvVbPx8fEGWIOM70ztojQ7G_KvDzrYBS=w1224-h918-no)

A bolt was threaded into a nut to give the right amount of protrusion and loctited in place. The threaded part was cut off below the nut leaving about 5mm. This was then wiggled into the hole until the nut sat flat against the face. In order to acheive this some of the lower threaded part had to be filed away. Once satisfied the nut was held with a drop of cyano. As this was not likely to hold totally secure the through holes were then back filled with JB Weld making sure it was well poked down the hole to surround the threaded portion.
(https://lh3.googleusercontent.com/C8dF79eQWo_EWFnjMbDIgNLUx6v3uAXXJsj_XfSxEdL9qZYeQ_jNW2RUdb5X8wdTObVTmiAaDVOxKoqILwFxu1qkX0NaXzeARZ_c1aMI-tR4aK9aUL8OuqGXF3ABVcQ2xBiME_4OO3xvI8LGJRD1WV2AB9BBZuqrjC6D4OgxyKvoxII7hIvYX3p-3iA9D0iQd9NnU0xLRBWTt98Jdt7bTZ8lMG2qYYeuBj21wuz3vsPo36BN5ySKp06jEVZ1MnxER7991dVqLDQAvczQqQUiG6yOyxmIQOe2_jA5-rTcaXIgq2XK7bS2o7tkFCQq9via6OzDomqPy5C85kdGWEg3B2UQ7kzv8PWtjBzlCp_CUqyOK0Ewxy0X-9oPzXfmpGqnpDyFFYqhrzu6nb1rZfsPslOfrWI1iNniqfVLsmkEmIYv8nQ_Em2QYzsxkZWW-LFWoDc1PND1yCcfnY2oyW5MNRpSuhaFKOG2pSegnGuChtjOQP-jzEMKDJggHrRuBGJ6XN8gR5dcPJOJZK8_LY5iawMVN6Cy2MFTY453H08T6qQoenQX_5eVleIwa9TTllyfzlFn1iG3e6nnHlj9T-3SCJ0wHal0fA_zjbMRo8av=w1224-h918-no)

The eccentrics were finally set in position today - the shaft had been scribed with two lines at the inlet and exhaust lead angles relative to the dowel hole which would secure the crank web. You can just make out the lines on shaft and eccentric in this pic. At this stage the crank web has yet to Loctited in position
(https://lh3.googleusercontent.com/8q7ocajMyCB70-lVqZRxZ9VJ9_gWgJk_ztCEKbCRZQVsU4OABWMAWmg49zCyunD1QwhYtjni8ahHlzLw53MoksVCoPUxsPg1EU4QZmDVGD7DdY1Hnn_HFFBdB4gfx3b8gJmlbUE9pqZIwQV8R3vsaXPAzzd_hi-DWn3oEpCDQzOPRnFuPhrajvLyyd2SPkdFkpkh5LRqTOmZ_6l6qKgsEQFGEt2EOvdBiWQ5fr8264Ae-0jkhoLkgWxZp6r1e4f_R-NVMS7YWmMbSL0B20XWH-AihEeFvzdgx09zeoiS5i6J94PfQvN2KlRvA0OqH0qbBXCwF6FUIh3CgkZi16M3_DzKydt0iOMJE9ktV7vNAEEwxLn6S6uo29CHCPBYDX6yAIPIR5WDScDu9ChQYxNb8X13m0Ezbvm_nmJgHvtyX_04Bmm4eBhQz4lqiM_nvqu_WbQjN1sozcmSPynQAkrtTu0_fGEIMA04ZXVOWiVH32IJAmzhGOTEI-yuRJXYB_2efLZFQsKHcKJlBo90AW7_foNaGwtLnRgvA0YQX14F4pyj61BGj1zk39LN-LZNSV8mJcENB36OyZRZ97dTkPL3tyNM69LUXdBhRg9te8mo=w1224-h918-no)

The crank pin was turned from En1a free cutting MS and the banjo oiler boss from brass. Must admit tapping those three 12BA holes with two taps that to be fair have definitely seen better days made for a few anxious moments.
The black ring at the far side is the closing ring for the inner cover board hub parts
(https://lh3.googleusercontent.com/fv9_Hvr4SKouDLEmfJZqy6k9jv77RYgl_G63YOPIckSL876QgFJ3-G2SegTG7tLogqPYxaf-3-pxV18NmHjdt8FfcJvAtITfZrUPlU65btB0k7wKAEH4Dh70c-kdngNXTyD4n-nYbqnADexSoKh9JelC3pT-9IbUspykK4i5qflMSF14yk_Ctf53gZpwdznmuw3Dj6ugjRr-YAfnLQCoUHcx4r2tgiPs04Gw-I5fUFyzBhyUmtQyDKkpl0kxc0Rzdq3IjBUNy5DPTVUXuZSI0lyc9-5XyOowmH4ln0wcYRrsjYNBu064RiGkR9ars-QNMSoyWXd6sMPOEhGmJGX2jcOrUe2WneUGrw0JkrHwqk1goGj-_cJ5-fAR1GhKvCF-LOZ296UWcmSXJHpxoNvJZXHNzecuL01kw-7qUwm6dZ6tW6dPxTZNSkUGEsSbf4lc9p3RU8PQsVbVc_LuakOYRMt049HdpL83OgiHUhU10QhKwMVinMJLPvDPuE8MQEsoyClpLXLmuD7yloB4dUM9nYU2QKwrMESZ2s9wb9XhZroKh29UDyZbt23oYGUyls5uXVATQixS5iz_CacRhPFANNKXWf0WifTyu43cPXs-=w1224-h918-no)

Well that's as far as progress got today - hopefully it will all be back in place tomorrow.

Hope that explains the 'dummy' eccentrics ok Dave and Chris

Time for a hot toddy and a warm bed me thinks

That's it then for tonight, regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 25, 2018, 10:31:04 PM
Good lord, it is your bedtime. Beautiful machining and brilliant “slide of hand” . Men have made millions on an “illusion”  :ThumbsUp:

Cletus
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on June 26, 2018, 12:25:34 AM
I jumped in and then realized I must look away.
Awesome.
That's the kind of work (like much on this forum) that makes me wonder how I can ever even get close. And I mean close in the sense of miles (or kilometers).
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on June 26, 2018, 01:18:06 AM
Thanks Tug

I appreciate you taking time to explain this very nice little detail.


Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 26, 2018, 11:11:10 AM
Late start today guys - nose still requiring attention - two boxes of tissues down -three to go I think ::)

Whiskey - long been a believer of slight of hand  but making millions  :o really?? I've gone sadly wrong somewhere as so far not a bloody penny has crossed my itchy palm :lolb:

Zee - we all start somewhere and all that we do is relative to each others output. Never be put off - just do your best at what ever level you are comfortable with and enjoy every minute - our time at it won't last long :ThumbsUp:

You're welcome Dave  :) - now, it's time for a coffee and a venture out to the ol shid to see if I can get that flywheel fitted at last  :)

Back a bit later perhaps - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on June 26, 2018, 08:58:19 PM
This is beautiful work.

Thank you very much for your help with my boiler.

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: J.L. on June 26, 2018, 09:15:43 PM
Hi Tug,

Just jumped in here and am not up to speed on the back stories, but I think those two eccentrics should be mounted in a velvet lined shadow box and mounted on the wall!

Most skillful and creative work Tug.

Cheers...John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 26, 2018, 09:23:28 PM
Hi Gary - you're welcome, thanks for looking in - you too John - thanks for the comments :ThumbsUp:

Been a bit of a hot one today but fairly cool in the shid  :)

I had bolted the 'solid' hub to one cover yesterday but run out of steam so today, albeit a late start, it was in to fit those boards with luck.

First off though I had overlooked that the keys would need attention so some time was spent filing these to fit individually to each key way so that they just tapped home tight on the last mil or so.

The hub ring and cover board on the eccentric side was placed over the shaft first then the keys fitted. The flywheel does have a grub screw but this serves more to keep the wheel on the shaft  in the correct place laterally whilst the keys are fitted.
(https://lh3.googleusercontent.com/3g11JsNpTZeyMbCANEVNa3JafPeHC4foNBhriqdqcF1_lidv9btM2V_ACW_szErY6_DS5kWGmU_qoMRUdE1RCN6dHtkTCBWEgxmhZgZNWGBcvBXwJGhgfPWDj99_8SE9YJZO34w_wKUFmXk06sV9Eo3G1_65QN6XWyIeFKi8fkNJ4q-GOECP2qSNpHSsZ2L7_7G1idMUNGsq6fLwZiNo-n9ixz2o4ixTe8lWf5aGjwM97ascu1Mu_UoSzGSxHDICAxk-MQ2A7nM_V2V68fPuBe5vGekjVUdIRLMeT13r_HTSXqynDf7rpIF36rGZ50H8HCwbP3fz8xTrRAAtaAVLUGoh25X3Bsc8KNBTG2ibICWiztTloV31RjGklCOU1gVJS8O98P9i3HQ1yghmkZlkbswKXjYvEWnUL2BnB8TLmg0edQ2GGdVbnLSfodHpnEt8YC4LA2ykbqVwzauF828rGzWtWxU_h5jlxb_1UP6jkug4_chWiMY1ylQWz6tsuawbz8dnt8HDBAJxIi8ij5DCfFzlD7gpLhdC8__HC_J42MGJDsOR6BpvbKODHAc7Ust1cXwEnHsMF59S8M16vlBzhdMnJGOSJKiv3qykxaY-=w1224-h918-no)

The first half of the hub located
(https://lh3.googleusercontent.com/kSCAbeMMR4mtTFCtwkqoPfpvixLz3Cxr_Y-75em1AoubsApDuOH07sYxBeu9Nez-Upl4golIgb8vgBWa13F3C8qNsNolE_2AAe40V5b9-OFn2L42YBX42_tW6Ou54gsJgcaSnh-N0q12vJin94XijaV7cbqFxcNxtBNELfy1umRpCAy6iZznXXdLAPeK9954LtsKfTi99USLMsepa398UqpJFRsQjXqrkwCKUX63O88hP6QtZiY0BhdW3HgVSdd3pjcI443RZ6Qw8kPnnM-1wB0bRccREgYrZ93JIDoP7iGzQ0VvqmAcJMa828Ucwz7qH5ty6UlfY0MjsqWJPlbJikvOP3ky3K0EAPmM5Ai8SLvQPNqEJWpGh-agq0_VSyG-fwzmUk7nTJo5PlPYuea-PiLVxU4DAoxDTp3q6ylyx3oKGnfc4781YN0qOx5nLq8kDkgB2Z9TOn0Qcrr9ua_MuXZqhDuy-Yv39JvFqGCkhAIozjW57nmy-qik585AuM6oGVuvnz1xzXVm2s-oDBNRVRuUuCBsDQYAovWCK_Mo8fmYs_qRi7Gu82dpnT-3sGytLvFwnw1-Xm3hvEa93-UbGUxM3h-zvzi-no5cxdu5=w1224-h918-no)

Followed by the second and the outer ring held in place by twenty 10 BA bolts. The closing ring has a temp hex head in but these will be square headed dog screws eventually.
(https://lh3.googleusercontent.com/n3lkNjRGaXFQFEkP1CuipZHvoPWIv8TaiCV0IxLGIG-7pLHIOfxPJCBr6UyyFw1Y5j2fF5jFJ6OvGVkxl47BraHyLPKMpUEv-7OxEFsBsvqwrzUPlP98CIvlEluoTsY0FRgIXotdGPZ7hhsoMn3oTktZBNAHFEtsx0jidMyDG1wTecXyX9I3OreWAY5J1e7L-u558XToJxFGaBDHcElTS29BsmPTpNnAlodo0U28WNgVaUQylVoDyzYj-ogCdn_77JSUKPBjTovfePXl6wsZyrzWsMUGT8qWIWWXIwAyuaM9jmbYgopMf_eKibT5anoFChVcdywRjfkrrsdT1KegkCPLN4zVDI6GJ7XI0F1v3rmHWP8iZWHho1tVxgiY_h9yNhSs1TZFeWQKl4AGnEqlIuryUVwGPuGavE0Gy7bw7IpSbfV_blIdWqS6iMKgqS9WyAaMZcHBxn38dqBcb0qjaIUGUFHKnMeSl7kBX8PFVj07kws0_eboXSmaPLpPbFKHbrjSHs7HbTFnRFjSmfPHMF1D8lJuauaZr3gIKc5rYh5A7g_sx6OCdyz4VCkQ71nA9mXItAVpCy4N4XQlDur-zQ5VEGwg8bKQTremD67O=w1224-h918-no)

Four more keys in the second side and second cover board was fitted.
(https://lh3.googleusercontent.com/rSfWODkoYJO8YrCXasp2nZo3LV7PdtzX6X5Gog1w50jKuGij7i5X2cW3h9EH5ktW9j0oD-Uk6rzv_kppz2rpRLVXv2D0uTAsO9HtUOi8SjioqPC0xnVzzPqnPxABkYyhcapVV5sAzR5mTCLZ8HI7_2u0actXV_CSZAIruKGAvzo0xfyaBx7Mm2zTCK0s6e5hroiooDsJ6QXD3Rl1Iq4CBB0R4DxYmXnyRUM8cHn5NWtDVuS6HS-yN6meYyPgX116hkMe4T6oC-Izw8I1iOilv-GtHlXm0CqJCWXa2kXnDM_RfHlmTP9T7WnjGPdC3KB-WHcRhEFT2GrqIlnSuM6fkHUM8o-psSpfZfWXZCg38WFcdTlItfEQ0mFc_zHC0tZsfR-RrO6MQJXJpCMQ34LFTpNhW7F9P8ky59tvzciSW7uEnyPOFnNPbC7ZgGx68gHEf5Lq3WS9HQkezxYGuxHmyhAmzzWqYDzh4BObDd_DkNcsnG5RSnUg_qSzkmm3hNBtNZ6FOAcMcbJ4zN7ZiVVFNaZSXOPiFkQqCyowulipBXqJXG8gDA9fRpFhtgcY5-M3aHwDy10puSvE7DGx9IvfFNLItDcNKLeQV2fNZ7BT=w1224-h918-no)

A quick clean away and at last the flywheel is back where it should be hopefully for the final time. Despite the break down of the parts there appears to be no misalignment on rebuild and the flywheel turned with ease albeit without the top bearings.

https://www.youtube.com/watch?v=fQ13Q7VOilU

That's it for a day or two - fading fast with this bloody summer cold but want to get that new yacht ready for the open day on Saturday

Thanks for looking in, back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on June 26, 2018, 09:26:12 PM
That looks incredibly good!!


 :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on June 26, 2018, 09:33:04 PM
Smooooth as silk!  ;D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on June 27, 2018, 12:43:42 AM
 :o

Very very good.  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on June 27, 2018, 01:16:13 AM
Beautiful!!


Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on June 27, 2018, 05:00:47 AM
The flywheel was a project of it's own. :NotWorthy: :praise2:

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on June 27, 2018, 07:03:02 AM
All coming together very nicely, the light wood goes well with the pale green.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Gas_mantle on June 27, 2018, 08:54:16 AM
It's a work of art Tug, great stuff  :ThumbsUp:

What was the thinking behind the wood panelling on the flywheels of some large engines ?  I kinda assumed it was a form of streamlining but surely the effect was minimal  :headscratch:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 27, 2018, 10:00:02 AM
Hi Guys - thanks for all the valued comments - much appreciated.

Peter - I believe, but am not absolutely certain, that it was mainly done to prevent windage more than having a streamline effect. When you think about it those spokes would displace an awful lot of air once at full chat which would have made for some pretty airy conditions in sometimes quite compact engine rooms. That said there would also be the drag of those spokes so a degree of streamlining would be there anyway. Anyone else have thoughts on this ?

Had a rough old night and feeling bloody rough this morning - only just surfaced. Might only be a summer head cold but I'm getting a bit old not to notice the effect it has  :old:

back soon - a definite 'Ol' Tug today
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Gas_mantle on June 27, 2018, 11:18:50 AM

Peter - I believe, but am not absolutely certain, that it was mainly done to prevent windage more than having a streamline effect. When you think about it those spokes would displace an awful lot of air once at full chat which would have made for some pretty airy conditions in sometimes quite compact engine rooms. That said there would also be the drag of those spokes so a degree of streamlining would be there anyway. Anyone else have thoughts on this?


I guess the windage theory sounds plausible but I can't help but think there must be other reasons ?

I'm really clutching at straws here but could it simple aesthetics play a part, the Victorians built things to look attractive. Maybe it was also to prevent things (people) getting caught in the spokes ?

Well, I did say I was clutching at straws  :headscratch:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on June 27, 2018, 12:11:55 PM
Another mention of Windage but then again may be to stop the hamster from escaping ;)

https://www.coldharbourmill.org.uk/pollit-and-wigzell/

EDIT

Same reason but different animal

https://books.google.co.uk/books?id=UoYIFJvreDMC&pg=PT105&lpg=PT105&dq=boarded+flywheel&source=bl&ots=cG1uJqaycQ&sig=xKEnVQ-wef3ercqauNnVGmnf19g&hl=en&sa=X&ved=0ahUKEwjH2vuz2vPbAhUTbMAKHVp3CEsQ6AEIYzAQ#v=onepage&q=boarded%20flywheel&f=false
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on June 27, 2018, 01:18:06 PM
Hope you are feeling better soon Tug!

Best wishes,

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on June 27, 2018, 03:05:59 PM
Tug,

Take it easy.  Pollen count is really high this year.  Even if you don't normally succumb, it may be adding to your woes.

Get well soon.

Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 27, 2018, 07:43:57 PM
Tug, the crap you are describing, has hurt me worse this year than ever. I don’t know if’n it’s just super heavy pollen or an act of terrorism  8). I’ve been clogged up so bad, that one minute my teeth are aching and the next, my nose will be running like a maple tap  :facepalm:. I’d offer to send you some Tennessee Whiskey, what for making a hot lemon toddy, but, due to the present political affairs; the tariffs would be atrocious  :lolb: :facepalm:. I’m not being funny here, but, I have found that the best relief I get comes from steam. I go to the big tiled shower in the pool bathhouse and just empty the 55 gallon water heater with no cold water added to the shower head whilst just deep breathing : works for a bit. I hope you get to feeling better: I want more build  :stir: :naughty:  :lolb:  Ask Sue if she needs me to send my mother’s chicken noodle soup recipe: that’s good medicine too  :ThumbsUp:.

Whiskey

Title: Re: Tug's Corliss Tandem Compound Project
Post by: b.lindsey on June 27, 2018, 08:21:57 PM
Totally awesome work on the cladding Ramon, a thing of beauty.

Bill
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 27, 2018, 08:41:28 PM
Hi guys - thanks for the concern  :ThumbsUp:

I don't usually suffer from pollen Rod but I agree it has been bad this year. The rape does give me slightly gritty eyes but nothing more. No, it really isn't anything more than a summer head cold but as you say Whiskey the ol nostrils are running better than a leeky fawcett (that's my 'americano' really coming out  ;D). Must confess though I didn't 'hed orf ta the ol shid' this morning but succumbed to the the ol bed instead  for most of the day::)  Nose has finally stopped but chest is now wheezing like a well flogged horse. I'll mend - I got to - I want to try that new yacht out on Saturday, its one of the few open days when racing isn't the priority and the weather is looking perfect for it ;)

One things for sure Peter I'm not suffering from 'wind'  :lolb:

A good link Jason that really explains it all well. I 'm not sure I've heard of the Cold Harbour mill before, doesn't ring a bell - shame it's right down in Devon - that really is a bit too far to go.

That's just reminded me - a short while back Sue and I took a quick break at one of the Warners hotels near Nottingham. Just before going I read about the Markham Grange Steam Museum so we took a quick trip up to Doncaster to visit. Unfortunately, though it should have been a steaming day the boiler feed was out of commission but it gave me the opportunity to take lots of little 'detail' pics of engine parts as well as some of the engines. They are all still sitting in the small pocket camera and have been quite forgot - I'll get that sorted and pop some pics up - it's a great place to visit :ThumbsUp:

Whiskey - I do love a drop of good old malt at times like this (as well as others of course ;)) but have you heard of or tried 'Yukon Jack'? Now that really does make the system perk up :o. As the label says 'distilled for Hoary nights' it certainly lives up to the hype  :ThumbsUp:

Your post has just popped up Bill, thanks for the kind comments

Time to break open that bottle I do believe  :D

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on June 27, 2018, 09:06:18 PM
Tug

Pollen is giving me grief this year , the only times I was fre of it was when I w**ked total air con no windows ( banks computer centre ) 12 hours of relief ,only thing I  miss though

Any way try some Glenfarclas 105 full cask strength about 70% that should help easy the malady, shame I cannot imbibe anymore due to meds 😭

But by ekk thou has dun a great job on the anti windage panels

Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on June 28, 2018, 07:12:58 AM

Doing this from my old (and slow) laptop. The Windows 10 no choice but to do it, we're here to improve your PC etc  'new update' has totally and utterly buggered up my PC  >:(
Regards for now - a very despondent Ol Tug ::)

Tug - have you thought about trying Ubuntu https://www.ubuntu.com/desktop (https://www.ubuntu.com/desktop) or another similar Linux distribution? I have used nothing else for the last 5 years or so and never looked back. Fast, clean, user friendly, stable... and absolutely free. There is even a handful of CAD applications in the software library, again all free, though I can't vouch for any of them as I haven't used them. I have no vested interests - am just one of the many who have found a better (and zero-cost) alternative to the horrors of Windows.

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 28, 2018, 09:23:44 AM
Thanks Gary - I have heard others mention the virtues of Linux in the past. I have checked the link and it seems very pronmising.

Not being a 'techie' by any means I'll have a word with the guys in the shop to see about sorting something out. I'm certainly not impressed with the way Windows 10 exercises control over your computer without you having an option >:(

Good luck with that boiler - have confidence in what you set out to do and you'll be fine  :ThumbsUp:

Regards - Tug

PS Apart from an irritating cough feeling much better today guys  :ThumbsUp:  Time to check that boat out :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on June 28, 2018, 12:37:30 PM
If you do decide to check out Ubuntu I'll be interested to hear what you think. Their website allows you to download the operating system and burn it on to a CD for an initial trial by booting from the CD rather than installing it on your hard drive in the first instance. If you like it you can then of course go back and download it on to your hard drive. At that stage you have the option of getting rid of Windows altogether or installing Ubuntu in a separate partition alongside Windows in a dual-boot system. I'm no techie either but in fact it's all very easy, and I'd recommend it to anyone to try. Don't worry, though - I'm not messianic about PC operating systems and will not labour the point further  :)

Thanks re the boiler - I remain upbeat!

Enjoy the boat  :)

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 29, 2018, 08:14:29 AM
Thanks Gary I'll let you know in due course.

Well, every thing is back in place as before the strip down and working nice and smoothly :) but it'll be a day or three before I get back on it....

(https://lh3.googleusercontent.com/Ew1vSg38xgWKljnTv2ZXxb8mLiwg3n3ZChghFgYACDjQ6d3oFvvFYTs_YwOy_q_tDVtxgerKY4DNVLlPYTqU_Rd0Z3NyAfX0Rt3wr9lGeW97jXiYAmwmPGxFhcZobY9c1Gb9ztOnpCRRQZu7TyF4ETZCG2xPdc9UA9WxVRLLe87334ntsuT-5YR2w4hywM_MxBl-eidwtC8AXWud40NhVNgwFXoVr4aoy-FdL4WbBtPqUJUFAHT7Gm50aPYoZdZhz9SOJdy1dD-MRkq-NjJlcJzPNKGvypGcAiqRAFh7NDv4Z72rzAaeY7DEmGIQHXJM4Am1Y63gPsL9JUSM5sYNvKUDRiArouW_5fmhYsFXJPXeykdKb5NNuDJEIufDboE--Rj1f2Y60ShWvNGydhGLZ2BtPdi_mP91lvxnU0M7sc5g2_h3orXtDg4Og5GTcLGdO5i5SL6kVZWk2XCBRC1pF8xfB6g8_LmBWzMyG1u2thfW2g0N8Z5adbCc4v9nCt7dfDYizq-uJhAjLoIMbp-vMEPZ3gwqY27G2uabVDP6p4DPhSMqEaCBjzWd6nE1c-PuuMg_5sQ64qNW2PLoPX3Ou_A7F0daDAL3j_czRxc_=w1224-h918-no)

The next major challenge is to do the lagging of the cylinders. That might sound a bit cart before the horse but the intention is to lag this with shim steel banded with brass angle. I don't fancy tapping 14 BA holes in the cast and there's not enough room for tapped inserts as on the D10 in the WaW. The lagging then, will have to be a (semi) permanent fixture held with 1/32 brass rivets so needs to be fitted first. I'm hoping to do each cylinder side as 'one piece' and if so the valve side will require quite a bit of machining. I've been loaned one of those small bench roller/bender/guillotine tools - it's the latter function required the most. The shim steel is tempered so relatively easy to cut and drill and and after many years languishing under the bench waiting for the right moment a small heat treatment oven has finally seen light of day. A gift from a well missed friend it's a bit 'Heath Robinson-ish' on it's electrics but it does work. Early test pieces show a nice blue grey colour is fairly easy to produce - hopefully the finished parts will be the same.  More on this later.

I really need to get this done before I can bolt the cylinders down - don't want to be removing them a second time - so this will slow progress down for a while but I'll keep you posted on progress.

Regards for now - Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on June 29, 2018, 12:44:56 PM
After all the work on the eccentrics you can't see those little nuts anymore.  Sad!  :'(
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on June 29, 2018, 02:17:49 PM
Beautiful work!

I look forward to watching it develop, and to learning from that.

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 29, 2018, 10:59:39 PM
Hi Kvom - after your post I did have to go check see. Yep they are visible but only just ;)

Nice to see you looking in Gary  - glad you had a good result  :ThumbsUp:.

Nothing done today due to a slight distraction  ;) Had to get the new boat ready for a whizz up the pond tomorrow ;)
(https://lh3.googleusercontent.com/OBHPLD5TZH-lrbdRms3QpGUi15Gf3qMnalKY3Awnb5yYXd8bVgZP588RpgGf9wCvl1qeQoui-U9o6tZviuSXXZAjrZXXZmv-fPsefKMUxxVhLW8w-TjQ4OpD8EtLmf2k4UTFoFovzRq0qBhKwsenwow_RgLzKMVONNbj63pfR3NzAXu9uy7PX6Cpx8crNyBDSyXRJp7KX0FuaWkzLk6grM2z8EcPTGlxZ3866nJ9UVrCAa0mNh8z8hFSYaugtlJ9AceG9hPfYHrM9ImcMtC7e0BFoLazxiQ17y_GHV-vcLwqeR-48icYizp4qS-nEA3KqNbbPnkX89-4xk9VLYkGrPqTwCYBB3Ky2anwvfM3lllhKio0fU2PYE8XA6aJ8J49fVqRPIa1LRf5fjlQUzGtz_oKPJ5oFPfoZpZjiiPPbrm6Yz_j96sY4nCkhHXvK-2KxV74XeZ0aleJLG182HvpaBYOyR-uHQMNcUi7AJ44Fj49Uv_WtAeOQ8TC39ZdakHNHsBAF3hjj5ZYJMJyuegRtlS0k4oZHyf0i9FMzMd8OdbifWYkeMFQjiMbwNRRmi00BQEOEdWW2Pyd_RJj1-aBxmONcqhO6Wvn3eHJWT3B=w1224-h918-no)

For those who like to know about such things it's class is a 10 Rater. Built, I would guess, about the mid sixties the actual design (at this stage) is unknown. With a overall length of 72" it has recently been restored from what appears to be a previous restoration but the original build is just superb. Built on the 'bread and butter' system the hull has been carved out inside to no more than 4-5mm thickness. Not sure about the timber but it looks like a smooth pine - Sugar pine perhaps?  Spent the day re-rigging the running rigging to how I prefer it, I cant wait to see it on the water tomorrow.

Sue's model, a 50" long 'Marblehead' is not quite as old but a nice build none the less - obviously we bought both these boats from previous owners.
(https://lh3.googleusercontent.com/RkWLaEPIK5psapa12UrxwCZQPGDUEmZnC4E5kRzyJkewrkloBzx6ly-E08XA8Uj5uw6ZCRync6fiJV7cdDGVMviEgtksuLTXxTULslFkC2xYEei7h2qaVwvSCFLq4SZvyUs5zIVTgwxVMul4DcbKunN3PerZU7GM5e19OK5VzHbBsaVxOSQclxCQYfDE9jsbx4s_LKgA-YRmYha1HCNoo6sZomSaGEGNGT3jRcCObazI9c9Fpu8qt4m2Bp8n-dU8lxydiB-t8ME3xF3LOMRBErb_FFF4nYNlfOcQImPCZ54WAQa3CjOadncnrUTa7K9ZuTQNZza4aXdUYCxKXfSv0CSE3EIa3cAv1pvPL76FwMlq5siGQRAHV-tazrH-0fL2HEPG5K01siBWzwM4EA7dNpXJ8u91yuqGAV3beDeF-1TmMKqsj5n746XMjX9FOhzzliRYZaeX-KZEHGYUi6lvBeKmcsfiXCtMn5DhjOahZ7GxUpuer-Mr-b_eta6gva_zvhY0v8z8N5EekST_UcSyuYAV9rQyIIw4JsUOIASS3TCLGG2Wi9LX-5Dvzam3J7ntdLAntoU5Pnjld1jGv86vckdb1VcZJsJTgtWw9K4_=w1224-h918-no)

We haven't been to sail for quite a few months so looking forwards to it - back on the engine later then ;)

As you can see it really is "Regards from 'tha ol shid' "

Have a good'un ya hear - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: zeeprogrammer on June 30, 2018, 12:05:36 AM
 Wonderful photos. Always nice to see a personal touch.  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on June 30, 2018, 09:11:11 AM
Wow - they look beautiful Tug!

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on June 30, 2018, 09:42:42 AM
 :ThumbsUp: Thanks.

 Looks like a very nice life to me!   :)

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Larry Sw on June 30, 2018, 02:48:11 PM
Just need to put some wings on those keels.
Probably wouldn't "Rate" anymore though.   :(
It looks as though a small child could actually sail either of those.   8)

Larry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on June 30, 2018, 07:54:23 PM
Tug, what a beautiful boat. Now, being quite uneducated on these types of vessels; are the sails RC controlled? Also, you said something about carved: as in, is this hull carved out of a solid piece?  Also it appears as if you have quite a short, but, really beautiful commute to the ol’ shid  :ThumbsUp:. And finally (drum roll) : where in the world did you find that pretty young lassie with the almost cowboy hat, to play with you and your boats  :lolb: :Jester: :cheers:. Hope y’all took video of the maiden voyage  :stir:.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on June 30, 2018, 11:08:58 PM
Hi Guys - thanks for looking in  :ThumbsUp:

We've both had a really enjoyable but very tiring day - it's amazing just how much you walk up and down the pond with these boats. It's been some eighteen months since we sailed (raced) on a weekly basis but neither of us feel we could go back to that routine again. That said it's been nice to see all the guys again and catch up. My friend Colin brought his big A rater - a bit longer and much beamier and heavier but reasonably matched so we had some good friendly racing in a fair but fickle breeze which made for interesting but very variable sailing speeds. Sorry Whiskey - I did take the camera but so engrossed with sailing and talking (probably not in that order  ;D) I completely forgot about it  ::)

The boat performed better than hoped for - handled very easily and turned better than expected. This boat was built in the sixties and was designed for vane sailing - the kind of rudder and fin/skeg usually fitted to those designs not always as effective under radio control as the usual all moving rudders are.

There are two independent controls Eric, rudder and sails. The two sails are connected to a winch and both operate in unison.

The hull is made from layers of uniform thickness planks - about an inch thick in this case. These planks are cut to a wide outer and inner profile 'slab' then glued on top of each other to form the basic hull The outside is then shaped then the inside carved away to leave a minimum thickness throughout the entire hull. An old way of making such a hull it's a labour of love by any means and this one was done superbly - whoever made it originally certainly was a skilful craftsman. Time and timber must have been much cheaper then!

Yep - don't take long to get out to the shid  :) The area in front of it is the last area of the garden requiring major attention but that is definitely not on the cards for this year  ;D

Well, that's it for a short diversion, though perhaps maybe not quite.  Some may have seen ref elsewhere to trying to find an old photo of a pair of oscillators I made years back. Not much luck there but during the root out up the loft I did come across this ....

(https://lh3.googleusercontent.com/RikHv-TsI4VMCRvYCFK_TCwzxu5YTHTsNeGk6OiI9a89uSZ_48KKr_jtzz8PoAYSuqGgdfXB4kOHVQiJ5kATm-PzQ_FTZgfWn6NvJu_TMgi1QAJ_dP0aySXntSRmn7thDItcGD9HsvmzZatOanKH3lORn623w6C70jksQTHxoTQvLMZrYQm9DN3R1NZ_slv0DA5iasfWGknHDV4aXJbxVmOmZ3j9lbigZDNYLY9ngPxXUiw5nn8c4iC4BDZp9PZv8g58TQanmUqn64ZhUfJ_b19ldqmabF4G9rUJ7g2xfPQ-6Qry6drODyg1BsASEu1tskD61Tw0-bbEyjVRa8Cz_NeHTDT-JFVKJqPcxJUpJf48sfIdIYJnbICae2mP4616hJEApDa3F_05D2LE8xC_r7V1L87Iw74NK8L25CSfQgmdHRc4G1zdwCEitiXihoHmYjoMdM7nOQuQ3W8oY7bcrw10LvgdIVOTX4d316STFSNYc64PEAIszV_a4xcx4x_58WoIkCdawZ0slzpya-HOpj2MSUBKFvOtqxzdAKRNhL5Tc5Hzu6wPsQ7VNVz5mS139qPYEHu7_-7c1nHvSONfTDM1y0zLUjV1svan_Rp7=w1224-h918-no)

Occasion is the launch of the beam trawler Suffolk Mariner at Richards Shipyard at Lowestoft circa 1961. Yep that's yours truly, sixteen years old, newly apprenticed and having to endure the ignominy, as all apprentices had to, of presenting the bouquet to the launch Mistress. A young WREN, her name was Susan Frith - (how's that for a 'short' memory and no it's not written on the back  :D) Note the lack of any suitable wear - a shipyard in those days was a rum old place to work especially in winter as I'm sure there are some on here who could confirm and work-wear  wasn't even invented - well not on Richards it wasn't!
Wearing my mentors old army BD jacket was an omen though for by seventeen and a half I had relinquished my apprenticeship and joined Airborne Forces. Six months later I was camped on Hudson Bay at Fort Churchill in the January - wouldn't have found anything to beat that on the shipyard  that's for sure ;)

Apologies for the nostalgia trip - normal service will be resumed quite soon  :D

Dew yu hev a gud week-en now

Ol - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on July 11, 2018, 08:20:58 PM
Excellent work on the flywheel cladding  :praise2:  :praise2: I think that there should be a video at the end of post 341 but all I see is a blank space  :headscratch: (IE11).

Glad you got some sailing in  :) Make the best of the UK summer  ::)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on July 11, 2018, 10:26:51 PM
Hello Roger - thanks for looking in and the kind comments  :)

I can't explain the loss of video at your end - I have just checked and it's there and accessible on this computer  :headscratch:

Yes it was good to get a boat on the water again and hopefully it won't be as long before the next time but I don't think I'll go back to the weekly racing routine - that's just too much commitment now.

The engine's on hold for a bit - still not convinced my idea for going about the cylinder cleading is sound so am mulling things over - considering my options you could say  ;D

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on July 12, 2018, 11:01:10 AM
Beautiful build as usual from you Ramon  :praise2:

Some of the videos will not show in Internet Explorer 11 and that is in all posts, not just this one, but works fine in Chrome.

It has something to do with how it is posted / stored - but I haven't looked into the details - just noticed that pages here with blank areas where I ekspert a video => copy the full address line above into Chrome and the video is there and can be played. I hope this helps a bit.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on August 02, 2018, 09:22:08 PM
Hi Ramon -

just read this thread right through.

It's an epic voyage, studded with gems!

I'll be delighted if I ever do work that's a hundredth as good as yours   :)

All the Best,

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 03, 2018, 08:24:22 AM
Morning guys

Gary you must have a strong constitution to have read all through that  ;D I've spent a lot of time learning and improving - it's a result of many enjoyable hours spent in a machine shop environment as well as on various hobbies over far too long :old:

Thanks for the kind comments too Per  and the tip on sorting the video. I think I may be at fault as it appears I should just paste the url direct into the text and not use the url brackets. (I think Jason pointed this out once before ::) - call it an age thing).

I haven't done anything since fitting the flywheel - currently distracted on getting the Mc'Onie to running state before the Forncett 'do' but will be back on it in due course.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on August 03, 2018, 12:30:14 PM
Hi Ramon,

Sounds like we need to persuade Chris to bring his McOnie's and then we could have a row of them !

Best wishes,

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on August 03, 2018, 10:00:12 PM

Gary you must have a strong constitution to have read all through that  ;D

:) Nah - it was easy to keep interested - both informative and entertaining!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on August 03, 2018, 11:45:34 PM
Hi Ramon,

Sounds like we need to persuade Chris to bring his McOnie's and then we could have a row of them !

Best wishes,

Simon.

can i bring mine as well ? !!! ;D what colour will yours be ,  we could have a rainbow display 11 ;D

willy
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 04, 2018, 08:22:18 AM
Hi Simon

Spoke with Chris on Tuesday. He's lost his mojo for displaying he says but is coming as a visitor though is bringing a couple of his half scale versions 'in his backpack' to pop on the table  :-. Well that's that the plan as of Tuesday  ;)

With Willy's engine though we can form a new group for Bill to advertise ;) Forncett ME Day featuring - 'The Three Mc'Onies'  ;D

I'm thinking Willy, only thinking mind, that mine might actually be red  :o though I do favour a biege colour as one seen on here from one of the US shows.

Not long now - just 8 weekends away. Can I give you a reminder to bring that catalogue along :ThumbsUp:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on August 04, 2018, 10:13:00 AM

I'm thinking Willy, only thinking mind, that mine might actually be red  :o

Go On, You know you want to :LittleDevil:

I do also like those engines all done in cream.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Stuart on August 04, 2018, 10:50:48 AM
Mines green  :stir: GWR green in fact
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Mcgyver on September 03, 2018, 12:11:19 PM
what a fantastic looking build.  I had to go back through it to figure out what the all the wood was about, interesting, I'd not seen a flywheel like that before.  A very nice job of it!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: K.B.C on November 08, 2018, 09:45:19 PM
Hi Ramon,

I have been watching with awe your build of the Horizontal steam engine, your pics of the big rope drive wheel reminds me very much of my Apprentice ship days as an Apprentice Millwright in the Riverside Flour mill in Glasgow.
The mill was a 7 -story building and all the milling machines were driven from a gigantic Triple Expansion engine which was unfortunately broken up when the mill was destroyed by fire., the flywheel was our responsibility to keep the bearings oiled and to have the rope splicer to adjust the ropes to all the various levels..
I have found these pics of the mill and the engine  (https://canmore.org.uk/site/173366/glasgow-shearer-street-riverside-mills?display=image )
As a mucky grease and flour dust covered individual I was not allowed into the engine room , as I remember the chief was a Mr Tom McGee, however at that time I was very much into training for Cycle racing and cycled the 25 miles to the mill an the return home, I was allowed to hang up my sweaty gear in the engine room to dry out ready for me when time to go home, that was as near to the engine as I was allowed.

If you look at pic no 610207 which is a view due south showing the wooden spars on the rope wheel and the ropes which by memory were 2' dia of pure cotton
Look at pic no 610201 looking due north on the West side of the engine you can just see the rope wheel which gives some idea of the engine size and the size of the rope wheel in the rope race.

There are quite a few views of the engine but nothing giving the overall size, this is the only 2- pages that I have been able to find so I hope that they are of interest to you, it was the pic of your rope wheel that prompted my post.

There is a pic there of the grain silos with the winding house on top which many a time on a good day I skived up there out of my foreman reach and watched the ships loading across from the mill,  just next to it was Kingston dock where the puffers docked overnight when in the city.

I hope that you and Sue are both well and the pics of the mill are of interest.
Regards

George. 
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 12, 2018, 06:43:02 PM
Hello George, nice to see you look in and read your interesting post  :ThumbsUp:

I have to confess that the engine is on hold at the moment and I'm looking in rather infrequently but a friend pointed me to it.

Glad you are enjoying the build so far and the flywheel make up. The pics are very interesting not only from your personal memory point of view but to show that inverted triple expansion engines were used in the factory environment as well as pumping and powering ships.

My only exposure to such a large engine(s) in my working life was aboard one of the rigs, a drill ship, I worked on - the Glomar North Sea. It was a converted collier ship that had two four cylinder, triple expansion engines. Despite serving aboard on three separate occasions, the last as diving supervisor for some three years, I only once saw the engines working as usually when the rig moved the divers had been sent ashore. I recall clearly one dreadful night in the southern Irish Sea when they needed to be though.  One of the most violent storms I witnessed in my time offshore built up steadily from about four o'clock in the afternoon pitching and rolling the rig the like I'd never seen. The sea continued to make but no action was taken to preempt any worsening situation resulting in one of the big winches that kept the guide wires to the seabed in tension being ripped from the deck and breaking a crew members leg as it hit him as it was dragged across the deck. The seas grew until finally the the drill casing was torn from the wellhead on the bottom and we lost five of the eight anchors that held us in position. One of the big metal buoys that was attached to each anchor was banging against the ships side we were that far out of position. At that time when both engines were truly required to keep the ship on heading in such massive seas one of them was completely out of action, stripped down for maintenance and the boilers in the same situation. We rolled from pillar to post for two days before the seas settled enough to get back on position the engine room staff trying desperately to get a boiler back in action. When you see a rig derrick swing from side to side in such a massive arc against the night sky it certainly makes for a buttock clenching moment :o A time firmly etched in my memory for sure.

We are both well, likewise I trust this finds you and Marion the same. Hope you still getting into your workshop and you haven't come off that cycle again.

Thanks again for looking in George - I'm afraid it will be a while before I start posting on the engine again though.

Stay well

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 19, 2018, 06:27:11 PM
Hi Guys - just to say I'm afraid there's been no progress on the Corliss for some time now. Currently I find myself meandering around the 'mojo depletion zone'  ::) but hope to get back onto something a'fore too long. Even the 'plastic distraction' is currently in the doldrums too.

I can say I've decided not to lag the cylinders but leave them as is in their primer colour - an 'engine finished, awaiting lagging' approach.

Whatever, in the meantime thanks for continuing to look in - it never ceases to amaze me how many do

Merry Christmas and a Happy New Year to you all

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Tennessee Whiskey on December 19, 2018, 08:15:25 PM
Well by God Hoss, y’all need to get ye ol’ arse in the holiday spirit and get cracking about  :lolb: :lolb:  Do I need to round up a jug of Yukon Jack to send your way  :stickpoke: 8). Seriously, glad you dropped in to check on us bunch of misfits. I’ll holler at you before Christmas. Tell Sue hey.

Whiskey
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 21, 2018, 01:49:41 PM
Hi Whiskey - Hell I'm havin' a ball - still well stocked with Yukon Jack  ;) but thanks for the offer.

Don't read to much into my comments - just having one of those 'time to take a break' moments (well 'period' actually) I think it does you good to have a rest from time to time and I guess this is one of them. Still have lots to think about in coming months as well as the Corliss. I had an old friend visit yesterday - him of the full size Meccano Car - so took the wraps off to show him. There's too much accomplished to let it languish for too long. Besides- my friend John now has his JLE-14 sparkie running so I need to catch up with him on that too. Been making some plugs for his and mine so haven't been completely idle  ;).

Say hello to Lou and 'y'all have a good time ya hear'

Merry Xmas - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 21, 2019, 08:43:42 PM
Hello Guys - I really can't believe it is exactly a year to the day that I last posted on this thread :o Just where has that time gone??

Well much of has gone on the garden of course but that is now 90% done - plumb wore myself out on that by around September time and of course machining-wise the Oliver engines took some time out. I have not done anything to move the Corliss on but hopefully that will change this coming year.

Hopefully? Well, truth to tell, quite out of the blue my 'achilles heel' has struck again.  Much against my better judgement earlier in the year I was coaxed to have a go with a control line model aircraft - took two laps to get the buzz back and by three I was hooked ::) Well they do say 'what comes round goes round' - very topical statement as far as control line flying is concerned.

I was given a model by a club member - yep joined up of course (I'm a hopeless case) and have been flying as often as weather allows. Very unsteady on my feet at first I'm now firmly back on them so to speak and enjoying it just as I used too so, as I approach seventyfive, I feel there's a few years left that I can enjoy myself going round in circles for one last time  ;D While I'm able to I'll make the most of it.

You may recall I sold the last of my flying models off last year but thanks to an act of unbelievable kindness and exceptional generosity I was given two of them back with an insistance that no money would be accepted. Completely taken aback by this gesture a certain Nova diesel engine went in the other direction to ease my conscience!

So, what to do? Well I had planned to make some new airframes but now have no real need other than perhaps the desire to do something different. It is my firm intention however to return to the Corliss in the New Year and work on it with a real intent to see it finished  :o well, if at all possible - we shall see ::)

On that note Seasons Greetings to all - May you all have a truly great Xmas and I wish you a very happy and peaceful New Year too

From tha ol shid - Ol Tug

Oil b bak as thay say ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on December 21, 2019, 09:07:23 PM
So nice to see you back Ramon.
Season's Greetings
Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Mcgyver on December 22, 2019, 01:32:39 AM
its been a great build and I've enjoyed it very much....maybe we can hope for some poor flying weather so we can see some more installments :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 22, 2019, 09:22:04 AM
Hi Tug, It's good to see you back!

It's a shame we couldn't meet at Forncett but if the rain around your area was anything like the wall of water I drove into near Thetford on the way from Cambridge then I can understand you staying at home.

I'm particularly glad to see you active on this thread again as I'm sure I'm going to need advice on what to do with the pile of bits on my workbench right now:

(https://7vktra.sn.files.1drv.com/y4mt0VksMRCcTBJYx1mv2FyVlTAF_kKuF3CVa3aCz1yU1h0QLWRtpHqeVglA1YMehcKj9U7PPD2ih_ytxBkklmSxg3eXnOmodQlcrpL7sgXbnGTJRC_dc0utMtkDBcopMFPvad-lgz6vwLW0veKeQTrx3qbykDYhngoGscQquJ3jRKHkl8vIhKDzorQwyO6qMEnBulZI1jNj91BBOjvgJ035A?width=800&height=600&cropmode=none)

I'll start a new build thread for this lot soon, right now we're away from home until after Christmas.

All the best for Christmas and for 2020 to you and everyone on MEM

David

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 22, 2019, 04:12:56 PM
Hey Tug

Please share the link to the YouTube video of you flying one of your planes, I would love to see it.  ;)

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 22, 2019, 06:20:18 PM
I'm so glad to hear that you really enjoyed flying again  :whoohoo:

So one can say that the friend who asked you to fly his plane / engine  :noidea: (my bad memory) some weeks before John and I visited Sue and you, had a positive influence on your desire to "be a part of the circle again", so to speak  :cheers:

One can also argue that with all the nice work you already has put into this engine, it would be a bit of a shame if you didn't complete it - so it is also nice to hear that you feel like continue the build here again  :)

Best wishes and a nice Xmas + please great Sue too.

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 23, 2019, 09:50:25 AM
Morning guys - thanks for taking the time to respond - good to hear from you  :)

I can't say I'm 'back' exactly though it's nice to hear you think I might be  ;) - No, it's just an update on where things stand at present but I do intend to get back on the Corliss asap this coming year

David - glad to see you made it home safely with your set - did that all go as hand baggage  :Lol: Given that super outcome with the Mastiff I don't think you'll need too much advice - I'll look forward to you starting yours in due course. Sorry we missed you but we made our minds not to attend Forncett on the Friday due to the weather warning. We have had to have our car extricated from the mud there before so prudence came before valour. Phoning Bill to explain our apologies we worked out I'd missed three in twenty seven events so felt a break could justifiably taken without loss of conscience  ;)

Dave - I don't have any videos and next years flying seems a way off - I can show you though what has just returned to the fold so to speak.....

I built this about twenty years ago - it's a 56" wingspan Bob Palmer designed Thunderbird Mk2. It was built from a plan from scratch. Powered by a Super Tigre G21/46 7cc glow motor and tissue covered. It is a fine flying model and was the last model I flew in competition. This pic was taken just before I sold it just over a year ago.

(https://lh3.googleusercontent.com/SKAm4aT3m0HpbB6H5Jw5GViqlIxvgri8n3chK5Y9msThWes1hdq5fFDI9Ku0ivs9qSFIZtkYCOoVDFiAAV26rJbUDKOLFbSMgFBv7zCM1fv1cFEvX6jMw5P57ZxiJqUXgifvIkVV_pliK_T5p6z52wbCVsi9Yb731hQDpSlvG1bk06eHyWHglA0uFfU8UYvuApBDx_mpFeqiokN_JpJujhFzDBsmD1ghEyl66PV6TttKlY2EHtJAAiRB22S-KFgypFQxj0TuJyfgU4WsmE82yYQ_-G8f5QCjLkbtT25oOpIO02EqQmDtFuIvom_Ory8WBEzP4y9LLDTx4FwfoEmnZudK-iITeP4ljoMh6_Ahrenn3iJtlNiVSlRFAOY-UitDxp-qVv4mKu_I13oLdCfpQemm7sqjsB76zYArE9Srk9EKqP6QPyQx5uRV4jCLhvsb_GvtjnseSaNq_x5dgDwTFAHq0v0FLmOZvYpDjo3CKq17_dkCljLjEMqkw2jlm4XDYx8bTVzKd2xK7MG9weJeALsiK65XzDDVa-52r9xDXzpL2SKuLzoDSlH4IaNxUU2aJwa45E87jz7MSpBkvh3DT4GooSTu-6yRl6DDm5VHxgpk3-gc9Qxs-DrX_sncshZbd8-JvV7ZwIsfzc95ww_JWlxAQB2F03W2sBSXEP8tzEes-x_cADnR8eG-uKKOSjUPxEx_Hn3fSz2R49aKyhRPP0n8XXKo7diV4MgCkHJMhE335O7c=w1207-h905-no)

I built this one, again from a plan, around 2010. I never flew this one and though I never regretted selling them I found myself wishing I had done. Little did I know that wish would be granted. It's a slightly smaller model powered by an OS35S glow motor and again tissue covered. I sold this in 2015 (and the one above) to a friend from Holland - Gerben.

(https://lh3.googleusercontent.com/NY1X389h_3-TFqpVZH96TMyjAqgsV6rpbXT5jAaRBKOYq6g17EtLT2gu4ZVNlXlisiZ--cs46q9CQEClcI4rB4JYDlibOQJhoUvFzrRhu2Xv2RjUHx-fsBdj1k0AvVZO28Fpq2KdU0CZgd9qK6AmvuuhNTxLjpddcVULiEVygyXmT1DdrdecfOO-09irrGEAlBNTXD06bYASkjdaezZHszEkOXpLBWItmMWphBhyNtvrpWtqqQK_7zYTR8m2QAGJ7507tyAyA2Fhc6A5LpD2Sq4YoJXUGkg35ePCAH307PC4HO9VmMqf2NRYJAup1o_qVbJ12L_upyvMblQYi2qNHxXmKKna-lTadkXXIt3ND01c-zYtw2vJpHuC5gxNfcmj5KEduWyEXT6eYW-wxR-zG3XolUIvKfkdhFQrPM2rHIGM9EJrA8YiMHL7Tjr0KEE6tsXQDHzxXvITr3yAzmQsOpKLR_lW628tThNhQ5-AhX05OOnfAoHdTVWcC8bbndUvlCOKCK7KlWHFW4iMuFaIPEuLp3xoeAgf5rx749kjY-iUpEzSRUeYgeL9MgBZfCh7S9BXcMTqfRHrXGDPhrJ53xPOKfuIzlASkmyUDdSNyz982XY865zy1ik8AC5cIW98x9N6u0PhzwK9sCC9biJJDO1kH4OgqiwqHokcQ6j0xwCFUEEfsPCVQMiJxSYpsLBNEusyr5xU2SQWeBUH-ZkjBJSnlP1m6ybxmlknMAEMaki7HrMz=w1024-h768-no)

As said - quite out of the blue these models are now back in their hangar thanks to Gerben's incredible generosity and kindness.  When I told him I was flying again and intended to make another Pinnacle he immediately said he would return this one. On arrival the Thunderbird was in his car too :o. Both as pristine as when they left I am really looking forwards to flying these models next year - the conditions have just not been right since receiving them. Needless to say I am still overwhelmed by Gerbens considerate action.

And so Per - you are so right - thanks to the friendship of others I have found myself doing something that I have always loved but had thought was truly dead. Just goes to show one should 'never say never'  ::) You are also right in that far too much has been put into the Corliss to let it languish so maybe this will be my New Years resolution ;)

So, on that note, the images above are to be the last - of a none Corliss nature - on this thread. Hopefully the next will be far more topical

Regards to all who have looked in afresh and my thanks for those replying - may you all have a great Xmas break

 Back in the New Year - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Flyboy Jim on December 23, 2019, 01:37:40 PM
Nice looking models. I can see why you're happy to have them back in your life. I flew some control line back in my youth.

I always enjoy these little side tips once in a while in build threads.  :)

Jim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 23, 2020, 11:21:01 PM
Well guys, it's been a long time coming but as promised "the next pics will be far more topical"

The last few months have seen little interest in machining due to a variety of non modelling factors but about a month ago a flicker of interest saw the wraps come off. I'm afraid I took no in progress images but heres a few of the current stage

I began by making all the valves from bronze to see how things would go and the engine now has its main working parts done and fitted. The bronze pistons have been fitted with PTFE impregnated packing for a friction free but excellent seal and the glands with graphited yarn.  I decided not to pack the pump piston as this is a non working item anyway and after turning it over a few times removed the springs on the valves due to the 'farting' sound at each end of the stroke :o

The cross head was tackled next with the bars machined from UHB11 steel (ex works, a lovely stress free  material that has the property of not moving no matter how much material is removed) ) and draw filed and emeried to dimension. The slides are cast iron - the dummy oil boxes serve as means to prevent the crosshead pin working it's way out

(https://lh3.googleusercontent.com/pw/ACtC-3fvT379ckg8YM6Kl4Tf7KKbjhGfMEEb98PHUIqUSMRyYwXuof_KRkP2glXN0Bjc0Ev-dKEBnTUZ269ob8wsNrpl994ti7nVHeBsiG3HUwOayPZCE8C9e-ikViDdVIQbQrAQ2mVjd8aNktNUT2nr5nd3kQ=w1218-h913-no?authuser=0)

After considering the amount of interupted cutting to be tackled the con rod is composite - a 'machined from one piece' big end and rod with the little end machined from solid (EN1a)

(https://lh3.googleusercontent.com/pw/ACtC-3cLmhz9JnY2Yu240WcU10199orSCe1sMxG4cwV4mBpWVBWfUIsk3N-ePiFDXKvBHBWUcLCgpO-C570QMIwfqBf3kbccMgNerXeqMMs6IKg_uYYR6LmDNn06N4_eBnxGQrfmk56IcWh9PMS04MUgzlm3Mg=w1218-h913-no?authuser=0)

The bearing parts are made from manganese bronze - two attempts at this due to the solder joint breaking as I reamed it. Second one was bored to size to prevent that recuring

(https://lh3.googleusercontent.com/pw/ACtC-3emzEY4ZMPvD4AZ-vTEUVCZmejusVwBhPvONkya49B3lpxNjW2Ow-3CzAZoioIrUoNAZrfZb9GyrJXBsAIvJOCYJB-3hWNlQoW15wh47OgOAdcco4bT64qHfMZszRkisGmHAO5OSS12nsPiUkoqrZpWlA=w1218-h913-no?authuser=0)

The little end has a 25 mm x 6.35 spigot that is loctited into a hole reamed in the end of the rod with the joint line at the boss Carefully set up to ensure squareness of alignment once the loctite had cured the join was then reinforced with two 3mm dia steel pins set in from underneath.

(https://lh3.googleusercontent.com/pw/ACtC-3cmMIJ3Z5MqIYg293kI3ryEl20nyccq8oPfvrCVrhLjWtXm-QrVtAg_4nANjYVOWdhK-8z2NYNrRYFIfWaPLvolmP8T0uYHnLOuO-l2DwICPM49RYJfVU4gVZC_3Rpfqw3c63j6h6h35nAmwE6bGavydA=w1218-h913-no?authuser=0)

Finally all the linkage to the exhaust valves are finished and fitted and working smoothly.
(https://lh3.googleusercontent.com/pw/ACtC-3c9iCykRaGaE0OMcLykQvPRYDNddWRgse8Xj7TJ8MMaN7sOHY_5UZWn8QknR-z7RmpBP4HEmkD-IqlD30ropeMZNbpwPIofRdf0IlZC1Y3WdCJDcFv15QbwbSVPlC0N8MhhUA584uZHlYWUPX73f4gdOg=w1218-h913-no?authuser=0)

Well that's it up to date. I wouldn't say I'm 'back on this again' per se as I find myself with a much shorter attention span on anything these days so we'll just have to see what happens next

As usual I hope that's of interest to those who have been following along.

Regards from tha ol shid

Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on August 23, 2020, 11:54:14 PM
Just beautiful.

Great photos too.

 :ThumbsUp: :ThumbsUp: :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on August 24, 2020, 12:06:03 AM
Outstanding workmanship! It's going to be a great engine.  :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on August 24, 2020, 12:45:10 AM
Nice to see you back at it Ramon.

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on August 24, 2020, 12:58:04 AM
Hi Tug,
Thanks for the pictures, it's good to see your progress. Now I really need to get on with my version!
David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on August 24, 2020, 12:46:15 PM
Gorgeous.  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: fumopuc on August 24, 2020, 04:16:33 PM
Hi Ramon,
good to see this impressive progress.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on August 24, 2020, 06:50:32 PM
Great to see it and hear from you again Tug - I almost felt that I was back in 'tha ol shid' again (a year later) and have a glimpse some of all your treasures  :ThumbsUp:

I hope both you and Sue are doing well - best wishes

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on August 24, 2020, 07:48:17 PM
Fabulous work!
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 25, 2020, 08:10:45 AM
'Morning Guys, Thanks for looking in and taking the time to post - always appreciated :ThumbsUp:

It's been far too long since I was working on this but I am pleased with this latest progress so maybe it will act as a catalyst to pay a bit more attention to than of late.

Thanks for the PM David - be in touch later.

Hope you are well Vince - nice to see your Corlisss on MEW  :ThumbsUp:

Per - wheres that year gone - I guess you and your brother in law won't be over here this year due to the virus but when you do again do call in for a for a cuppa and a visit to 'tha ol shid' if you are this way. Sue and I are fine - hope you are too.

The engine, despite all the potential for binding, runs quite freely - I can 'run' it by turning it by hand holding the big end but whether all the timing is right and the valves work as they should remains to be seen - if they don't it's going to be one big paperweight  ::).

Thanks again guys, always good to hear from fellow members - back sometime with a further update

To coin a good friend from Tennessee

Y'all stay safe now ya' hear  :)

Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on August 25, 2020, 12:59:38 PM
I'm not sure John and I would have gone to the UK this year if it had been an option ....
But his mother is in the extreme high risk group with regards to Covid, so not even his sister that live close to their parents are allowed to visit them ...  :-\

I was sick with all the symtomps off the worst version off Covid last week (except it only lasted 72 hours), and I was just released from home quarantine yesterday afternoon and back to work today. Other than that things are improving - I got my first mill just about exactly a year after we meet. It hasn't touched an engine part yet - the closest have been a few parts for the Off-Roader and T-Nuts for itself. Most time since it arrevid has been used to transform the workshop to make space for it - but it's in place now  ;D
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 27, 2020, 10:31:56 AM
Hi Per, hope you are as well as you sound - I believe having this virus can leave you with some unpleasant after affects that can hang around for some time.

Good news about your mill  - you're well on your way now to making that David Anderson eh ;)

Regards to John - offer's open whenever you are this way again :)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on August 27, 2020, 11:35:02 AM
Thank you very much Ramon, both for your concern and the open invitation :)

As all the symptoms were the same as Covid - I was tested, and it was not Covid - so beside the annoyance of being sick and the following quarantine (until the test result came back), there are and will be no after effects :)

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on August 30, 2020, 10:58:03 AM
Hopefully you are correct, Per.

The tests are not infallible though. My daughter and her flatmate are both nurses. Earlier in the pandemic they both had direct contact with patients who had covid, with inadequate or no PPE (I shall refrain from getting political about this here in the forum!).  They share a kitchen and bathroom in the flat. They both developed the same clear covid symptoms. Shortly afterwards they were tested for antibodies. He tested positive; she tested negative.

That was antibody testing. It may be different  with the test for actual covid itself - I don't know without looking it up.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on August 30, 2020, 11:22:17 AM
Good to hear Per lets hope it stays that way :ThumbsUp:

We have been doing our best to be as cautious as possible but despite the easing of sanctions it's still ever present. Given my age the last thing I want to do is spend one minute of it staring at the ceiling of a Covid ward wondering if I'm going to make it!  Perish the thought - I have an engine to finish (besides 'one or two' other things I'd like to do) before I fall off the end of my perch ;D

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 13, 2020, 10:20:46 PM
Hi Guys,

Had a busy week making the governor parts ......

(https://lh3.googleusercontent.com/pw/ACtC-3c9ynqEM8Uev7VoojnLAUgXRsSMBFV3fU3b8WqlLFuWYHYwUxeUpkxvzGaNqM_lVGxwZXEGfAO3s4TL_mfLPZIGbf2_QsUHYb9fsS4KUGFmisIjEriz7bxv_fg-hJcIa8TbA-pU8kmGCyfN2ZhqNrjT0Q=w1218-h913-no?authuser=0)

.. and very pleased with the result :)

Yes it has been assembled and tested but it's now stripped to paint the column and the rebuild and fit destined for tomorrow. Next up is to start on the inlet side of things.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on September 13, 2020, 10:39:45 PM
Great job on the governor parts, watching along!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on September 13, 2020, 11:14:04 PM
Those bits look good, hope it works as well!

Is the column a casting or a fabrication?

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on September 14, 2020, 12:03:42 AM
Beautifully crafted components.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 14, 2020, 10:35:16 PM
Hi Guys - thanks for looking in 👍

David - the pedestal is a fabrication of the two parts as drawn but with a slight modification of the top part to suit myself. It's machined from cast iron so I guess it's as near as you can get with the help of a smidgeon of JB Weld (what else  ::)) The main spindle is supported top and bottom by bronze bearings

(https://lh3.googleusercontent.com/pw/ACtC-3fhnZkhAD6wZ1sxOdOfd-_-N3eleloo8gbXESHc9mPqewWeyMja_gUyBs3oSW10uMayPSPF6uT1DbulB3Llo1Pg4HHpTCH1qR4ASYs_hjKdsTX97wPkzekq5gFdacuUUh2_Ja8AbNbVXvOVc38aikBjdg=w1218-h913-no?authuser=0)

Here it is all in situ but it may have to come apart again for an improvement.....

(https://lh3.googleusercontent.com/pw/ACtC-3ecNxcaupJ1o1Q5CjfIzVS3TJRuZmqf1B7NA_dSo4ESjkbiw15Y8lmnWKy-2C6lVcmFQerObUTwTu8LQQTT3fz4PTSnb42gDQ5EMfpMFJM2qhhpiZSvYbG0E88vAdufwAxJKw67uL1nXghH1PQP9Z6ZrQ=w1218-h913-no?authuser=0)

.... As drawn the spindle make up allows the spool to be pressed against the top of the pedestal by the pressure of the spring which creates a fair degree of friction. It would be better to have the spindle stepped so that the spool has something to register against without causing this situation. As it stands here I have had to weaken the spring considerably - I will try it as is but have a feeling that in the long run I will need to make a new shaft and open the bearings.

Bit of a red letter day today - I'm pretty certain I have just machined the last part that requires to be made from cast iron  :)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on September 14, 2020, 11:50:34 PM
Looks immaculate!

 :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 15, 2020, 11:28:13 AM
Thanks Gary  :)

David - further to that thinking, this morning I gave it another thought.

I have now reduced the shaft to 3.5 diameter above the pedestal and fitted a sleeve over it - 24 mm long 4 OD x 3.5 ID with a 5.5 diameter 0.8 thin shoulder at the bottom. This gives 5 thou running clearance between the shaft and pedestal and the spool bottoms out on the shoulder. The correct spring has been refitted and the whole thing works much much better - no friction as such and the weights much more smoother and positive in their movement

Hope that's of interest to you

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on September 15, 2020, 01:29:06 PM
Hi Tug,
Definitely of interest! I haven't got a CAD model of the governor as drawn, I think I modified it as I went to get rid of interferences etc, I'll put together an "as drawn" version shortly for future reference. I think that minimising friction is the only way to go for something like a governor and then you are in to watchmaking methods to keep friction down whilst limiting lost motion. I guess I'll learn a lot about this when I get to actually make one  :(. I wonder if anyone who has completed one of these engines has made the governor work - does Bob Potter know?

You may well be correct that the engine will run well enough even if the governor isn't really working but it would be cool to actually see the Corliss gear working as it should to control speed. MJM's electronic governor might find a place here!

BTW, I think you used a drive belt for a turntable for the governor belt, can you remember a part number/source? I don't think there's much chance of finding 1/16(?) scale cotton drive rope and I don't fancy making the splices anyway.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 15, 2020, 06:12:08 PM
Hi David

I haven't had any contact with Bob for some time but maybe if he reads this he'll comment.

I wouldn't say I've done anything to reduce friction except as mentioned other than making all working surfaces nice and smooth and bind free. As it is at the moment the governor responds quite quickly to an increase in RPM (hand driven of course) but how it will react once the linkage is complete is another matter.

A search on ebay for turntable belts will soon bring something up - the one fitted at the moment is approx 285mm end to end  when laid flat. Though it works okay it is probably a tad on the slack side so I intend to search for something about 260-70 to increase the tension a bit

Not much done today but maybe tomorrow eh :)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on September 15, 2020, 08:53:24 PM
Great to see that you got a desire to continue a bit more on this build Ramon  :cheers:
And the parts are up to your usual standard  :ThumbsUp:

Say hello to Sue and take care.

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 16, 2020, 09:08:19 AM
Hi Per - yes I think I've surprised myself with how much I've enjoyed picking it up again. Novelty hasn't worn off yet so theres still a bit more to come - who knows it might even get finished  ;D

Good to hear from you, how's that new mill going?

Hope you are well, we are still ticking over nicely despite the restrictions.

Sue sends her regards too,

All the best - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on September 16, 2020, 11:37:15 AM
Great to hear that you enjoy making parts again  :cheers:

I'm sure that the mill is doing fine, though it might be a bit bored as I only had found time to correct the T-Nuts for it and repairing some parts for my Off-Roader winter bike so far ...
But I have promished myself that the first model engine part done on it will be the piston pin hole and weight reducing milling internal to it, for a new Viking (and the old one too)  so I can get it to run as it should.

I'm doing fine, if rather busy with (as usual) way too many projects and unfortunately with higher priority than model engines ....

Thank you to you both and best wishes

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 22, 2020, 11:01:22 PM
Hi Per, I shall look forwards to that Viking in due course  ;)

I've been picking away at the trip gear parts - all milled from cast iron and small amouts of JBW to give the odd fillet here and there.

Though I have found the drawings to be good overall there are some slight discrepancies in this area but with some careful jiggling and countless take aparts and reassmblies I'm getting there.

Here are a couple of pics of state of play as of this evening

The HP valve rocker is finally linked up which served to highlight the fact that any adjustment finer than half the thread pitch is out of the question. A 5BA LH tap and die is on order to rectify this situation.

(https://lh3.googleusercontent.com/pw/ACtC-3dbaDK-8q2QzU1-DhjufPIryM7ccesuy8edscSaHsjl1IHZeqbw_oz74K3TEQOfls8MsXpTYJgOB3T1cqtqk5pNxeXo6tyfpaFHNU5I1nlINT7VKD1dVuenGEWFXiYglxuRFrySKTfhae-D8WJZzYrtjQ=w1218-h913-no?authuser=0)

The exhaust linkage had to be rearranged for clearance on the inlet linkage. New pins are required hence the loose parts

(https://lh3.googleusercontent.com/pw/ACtC-3euO2UI9xrXY0tL188lM5tj8wzb7cGsgekJnxylbpeasmFgTNkSsAnywvuWqVEHBvlFgO4jJ2prxxhNrqwhTDw5EdE_mp8j0Q2l4XsaMoLkS7yT9pom1yk72zor9TB8JkHGzd_SykOgzSXhliWMli_Zvg=w1218-h913-no?authuser=0)

One of the things I overlooked when changing the steam stop valve to top mounted as opposed to floor standing was the bracket for the govenor linkage. I think I can get away with this by putting a spacer underneath the valve.

That's the latest - still the inlet valves and spindles to deal with plus more linkages  ::)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on September 22, 2020, 11:24:54 PM
Great progress and beautiful work Tug!
Your photos are stunning!
Thanks for the updates.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on September 25, 2020, 11:44:32 PM
Tug
This is all good to see and it provides more inspiration and encouragement for me to keep going with my engine.

All the extra detail you've added really shows in these pictures.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on September 26, 2020, 08:57:53 AM
Exquisite :praise2: :popcorn: :popcorn:     Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on September 28, 2020, 10:44:35 AM
Dave, David and Terry - thanks for looking in  :ThumbsUp:

Photos are more by luck than judgement Dave - Nikon Coolpix does the work I just press the button ::)

David - I've enjoyed doing the odd bit of personalisation so I'm glad to hear it's apparent  :) Still working on the 'gear' parts - slow and at times a mite tedious but it's slowly getting there. Making the linkage to the valve rocker arm with L and R threads made a huge improvement in adjustability over that as drawn. I shall do the same on the governor linkage - in fact that's what I'm about to go and do on this damp and cold morning  - the 'ole shid' is the only place to be on such a day  ;D

Regards - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on September 30, 2020, 11:42:15 AM
Glad to see you back on this one  :)  :)  :wine1: Lots of fidley bits for the valve gear  ::)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 05, 2020, 10:19:53 PM
Hello Roger - thanks for looking in  :ThumbsUp:

'Fidley bits' ? well you could say that I guess  ::)

Here's the latest update as of tonight - quite a bit done this last week or so but doesn't look much once in place. Getting there though - soon be working on the inlet valve gear.

(https://lh3.googleusercontent.com/pw/ACtC-3fgwc66H_jo5uQ4Rtq1pX02P15BwWT1GK13EMD4cjsDDqZKTMCoJ8w5Nw-xh06htIpyI6uUgUvjd7g-Xou3fjjdFq92qB8d09LQ6dGahc44D0ICpWTUNR2Xn611NkbCmGnbplZfcILOQgq-2gs7JcQ-tQ=w1218-h913-no?authuser=0)

All the cylinder heads have now had the studs fitted and a start on the pipework made. The pipework was not soldered but assembled with a liberal coating of JBWeld on all joints. Based on the tests done on the Wide a Wake build I'm quite confident this will more than live up to the stresses involved. Using JBW and doing it this way meant it could be done in situ rather than having to make a jig to keep all parts in line while soldering.

(https://lh3.googleusercontent.com/pw/ACtC-3eNbHOYFVr7MuLlqBNMEyTA22xgQ8EC1TIVt3clRygm02ruxim20zuEWNqn5DFFY-OWF6aIzPWa8IvCDWYcioRygAfu0NRtR7lyuINIoMLd8KjsihPbvRemwjy90gqR7mRV17SHBI3P6WD5zF8386ND0g=w1218-h913-no?authuser=0)

Still a lot of small parts to make but it's getting closer to the point of it all - will it run ?

Glad tidings to all who look in

'Tha's it fer ter nite'

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 05, 2020, 10:37:59 PM
Wow... this is just amazing!

 :LittleAngel:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 05, 2020, 11:01:37 PM
Hi Tug,
I think that "the odd bit of personalisation" is a serious understatement! You've made a lot of improvements to the look of the design, if you hadn't "personalised" it would have been finished decades ago  :). In the picture looking towards the air pump I can't see the "atmospheric exhaust valve" anywhere; have you chosen to omit this? For an engine that will only run on air it doesn't look to have any real purpose and apart from that I still haven't worked out the correct assembly arrangement from the drawings.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 06, 2020, 12:00:03 PM
Ah, you had me going there for a moment David - Atmospheric exhaust valve? What's that then? :D Had to get the original dyeline prints out to find it (I've been working to tiled photo copies in order to protect them from the light).

Having looked at it it would be under the base anyway so will omit it. Though the condenser/airpump is made to print and could function if required I have removed the springs as previously mentioned so it is, for all intents and purposes, a dummy. To that effect, though there is material available to couple it up correctly (should whoever owns it after I'm long gone desire to do so) I have brought the exhaust out from the LP cylinder directly. Seemed no point in making it find its way all through the condenser and associated pipework. My 'Atmospheric Exhaust Valve' is therefore a piece of thick walled silicone tubing  ;)

With no assembly drawing I assume this valve would work by the exhaust pressure holding the valve to 'close to atmosphere' position and be opened by the lever to 'open to atmosphere' which is held back by the catch.

A late start today but now off to begin those inlet valve parts

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 11, 2020, 10:45:29 PM
Hi Guys,

Just a quick post to say I now have the inlet valves fitted and the LP cylinder ones working - just the trip gear linkage to do to finish that cylinder off  :)

(https://lh3.googleusercontent.com/pw/ACtC-3cvOShpXbPJsfeMmkWpQ35R7tBtQiw3qNTS86wj3baVi6Qj5uFm_MRSXhjBhmLiTEDxAnhz3NJ9nAxgxVJdY2PoHoTCQqFurye7-5oTTkeuJh0yG-Saowo0ZnjZxpiSCDVvjYjyyxE09fheGZ7CmomKvw=w1218-h913-no?authuser=0)

(https://lh3.googleusercontent.com/pw/ACtC-3duNJDVJdN0RAUo2RizUM94L9YcpJeYd0SZkLLx7MGXTcuYXASINFPucStA-m_DzhG1yaxmRCmZrOV-NtZ71TCmXQ9RQcYkdeCgD6leRYHjvpqSRC4-P4GAU-onB1DVaLqfiDvboKi-5hqrnHIajoqaug=w1218-h913-no?authuser=0)

Most of the threaded parts required shortening from drawn dimensions which made for several assembly and dis-assemblies. One thing I have found out David (DT) is that the trip bars work perfectly well by gravity  :ThumbsUp: - you do really need a right and left hand threaded coupling to the rockers though and I'm sure that the drop links for the trip gear will really benefit from that facility too. I was able to 'run' the engine by hand power and ascertain the trip gear works well by holding it in place - only thing I'm a little unsure on is the actual amount the valves open. The only way I can see to improve that is to increase the throw of the rocker slightly

It won't be that long before finding out if the short opening will have a detrimental effect. I was hoping that this engine would run on quite low pressure but now thinking that possibly that may not quite be the case.

That's it for tonight, hopefully the HP cylinder will soon reach the same stage and those trip links can be tackled

Hope that's of interest

Regards for now - Tug




Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 12, 2020, 12:12:33 PM
Hi Tug,
Thanks for the reassurance re the links dropping, it's as well this engine doesn't have to fly inverted, it wouldn't be any good in a control liner ;D.

Those rounded-off valve links look far better than the original design!

After a lot of fiddling around in Alibre I have found some link lengths that look to get the valves almost fully open, they should stay there until tripped - diagrams sent in a PM. If the measurements turn out to be close to correct I'll post them later in my own build.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on October 12, 2020, 03:05:21 PM
That's sure a lot of nuts!   ;D

For the horizontal dashpots, are there springs inside?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 12, 2020, 06:46:14 PM
Thanks for looking in 'KV' :ThumbsUp:

Yes you could say that - they appear endless  ::) I've been having to open 8BA nuts to 7BA today just to keep going - hopefully the latest order from EKP will arrive tomorrow.

The dashpots pistons are separated by a spring and appear to work quite well - theres no dampening as such, at this size I doubt it would be effective anyway - those small bolts in the face representing bleed  points are dummies

David - Just come in from the workshop - had a good day spoilt only by domestic duties this morning  ::)

Thanks for the drawings which are helpful. I now have the HP valves and dashpots hooked up. I haven't measured the dimensions arrived at to compare them with the (Throp) drawings but will check the lengths tomorrow against yours.

I think one of the reasons the valve opening appears a bit short on the LP side is the fact that the linkage from the HP rocker to the LP rocker does not meet the LP one at right angles to its centre line of movement - just like the bellcrank in a control line model, if set up in this way it does give assymetric movement.

Talking of which - you have to admit it would make for some excessive nose weight ;D

Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 13, 2020, 02:15:02 PM

(https://lh3.googleusercontent.com/pw/ACtC-3duNJDVJdN0RAUo2RizUM94L9YcpJeYd0SZkLLx7MGXTcuYXASINFPucStA-m_DzhG1yaxmRCmZrOV-NtZ71TCmXQ9RQcYkdeCgD6leRYHjvpqSRC4-P4GAU-onB1DVaLqfiDvboKi-5hqrnHIajoqaug=w1218-h913-no?authuser=0)


I wish I had something more knowledgeable to say than just 'wow!'.

But...well...wow!

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 13, 2020, 10:13:23 PM
Well 'wow!' is better than nothing at all Gary hope you are getting something from it  :) 

Just bear in mind one thing - when I, and many others too, started out on this hobby much like you have, nothing looked like this does - it all comes with practice, 'time applied', setbacks and mistakes. You have a great road ahead of you - go for it.

It's amazing what enthusiasm (which you obviously possess) - can do for you  :ThumbsUp: :ThumbsUp:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 13, 2020, 10:57:11 PM
Thank you Ramon - these are kind and encouraging words.

What I get from looking at the photos of your work is not only the obvious sense of technical ability and skill, but also the sheer beauty of it. Even the colours...

Cheers,

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on October 14, 2020, 12:07:52 AM
Beautiful Tug, just beautiful.   :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on October 14, 2020, 01:12:02 PM
Wow.   :NotWorthy: :NotWorthy:

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 14, 2020, 05:41:27 PM
Well, they were well meant and well deserved Gary - hope you get your workshop back up and safe soon.

Thanks for looking in and your endorsement Craig - appreciated  :ThumbsUp:

You too Vince - hope you're are keeping well and enjoying that Mediteranean sunshine - really damp and dismal here, been raining for days now but - its bright and warm in the workshop  :)

Had one of those less productive days - several phone calls and just couldn't find any real momentum but tomorrow's another day.

HP cylinder is now at the same stage as the LP and all is working as it should. Currently working on the drop links to connect to the trip levers which should be done by the week end and I can see if it all works as it should. At this rate soon be thinking about putting some air on it  :)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on October 15, 2020, 02:29:04 PM
Hi ,This is looking spectacular. and the photography is really good..Something to aspire too definitely . I was looking at an old 18th century mine pumping engine and couldn't help noticing that with all those actuating curved levers working against stops that this looked a bit like a Corliss system for adjusting cut off  etc etc  ?!!! keep up this Wonderfull work

Willy

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 16, 2020, 09:20:43 AM
Hello Willy - good to hear from you, "Howwa yew gittin orn up ther in Naw-wich bor" ;D  Hope you are keeping well and staying safe.

Photography is down to the camera I'm afraid - all I do is aim the thing!

Coming to the end of the linkages now - it has been tedious at times and I'm not highly motivated at the moment despite the end getting closer but I'll keep going now. Too close not too give in now though  :)

Look after yourself - hopefully we'll get together at Forncett  next year if things improve

Regards - Tug



Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on October 16, 2020, 11:32:33 AM
Hi Ramon, those linkages really are a marvel.  I can’t imagine what it was like to design them in the days before CAD.  You have been on a marathon to make them all so accurately.  No room for sloppy joints there.

I can see why the engine has to be so large.  Enjoying watching every step.

MJM460

Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on October 16, 2020, 02:43:22 PM
Still following along Ramon. As usual the work is first rate. Your attention to detail is second to none. This is where the Craftsmanship part comes into model building. Yes a link, rod or piece can be simple and made to work but when it's filed, shaped and polished so that even when magnified by the camera it looks like it was made twice as large.
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 17, 2020, 08:02:13 PM
Hi MJM and George - glad to see you here and for the kind comments  :) Yes it has been a bit of a marathon but ....

......  I'm pleased to say that this particular phase is over - the whole trip gear is now finished and basically working as it should. I say basically as it works when the engine is turned by hand but until some air gets pumped in I won't know if it's all in phase - think positive I keep reminding myself  :D

Apologies for what seems like repetitive images but I assure you they show an advance on those previous

LP Cylinder finalised. Those studs on the steam chest are all going to have to come out to be shortened ::)
(https://lh3.googleusercontent.com/pw/ACtC-3dK12AblUZvVuLvr9UNMCSgF65KCjtgRc8-u-QlmUn-APNFJxLH_P1O1xXTJg3S9ceWKcwawkYAhAar4PJH7UsPxeFDA6tjUrbDMXWbssZAJK0ZfEAkOhr1y1fsj9_MoOz7Y-9iyWIsAPIfGCFwOX1hDw=w1218-h913-no?authuser=0)

And the HP cylinder. If I turn it  by hand fast enough the governor does change the point of trip so it does look promising. The trips are in reasonable synch on both cylinders but theres still quite a bit of tweaking to do I'm sure.
(https://lh3.googleusercontent.com/pw/ACtC-3fVDqiboMOv9KOllhgwt3zPpCUhfpd213jEeUoiLQK4N78Xn9Ix5Yrunyg_ODxTUZKYRr0ru3TmOYkSuA5XNMqEjieUJ-X6aZ8QSs_Lcli1GzlWoc1wkHBtTb1AuRX_IK6IafCwg-zRTOw53oZtpXzeug=w1218-h913-no?authuser=0)

Getting the steam chests studded and fitted is next then I'm going to turn to something I've been looking forwards to for some reason - machining the handrail stanchions.

That's it for this week

Thanks for looking in

From 'tha ol shid then'

'Ol Tug'

Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on October 17, 2020, 11:37:23 PM
The bottom photo shows the linkage between the governor and the pivot that adjusts the cutoff on the HP cylinder.  Is there a linkage to the same pivot on the HP cylinder?  It's hard to see from the top photo what's going on at that point.

Nice to see it come together.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on October 18, 2020, 06:13:54 AM
Tug,
Just a quick note to say I'm following along and that is an awesome looking engine!  Love all those studs and that complex linkage!  Can't wait to see it all work :)
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 18, 2020, 03:39:51 PM
Hi Kim - can't say I feel quite the same way about the studs  ::) but I get your meaning  ;D

'KV' - I think you mean is there a linkage on the LP cylinder and I assume you mean in reference to the governor?

The governor linkage moves the trip levers on the HP cylinder by direct linkage as you see but the linkage on the LP is linked to that small handwheel on top that once set is locked in a fixed position - ie the trips are not influenced by the governor. I'm not very knowledgeable on full size practice but assume that as this is a compound once the engine is 'governed' on the HP all else just 'follows along'

One step forward three back today removing those studs ::) so decided to have a break for the afternoon.

Thanks for looking in guys :)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 19, 2020, 11:54:16 AM
Hi Tug,
Those turnbuckle style trip links look great! Also much finer adjustment with L & R hand threads. I'm really hanging out for the results of the first air pressure tests...

How are you going to clad the cylinders, or aren't you? They do look fine as they are now.

Regards, David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on October 19, 2020, 12:31:00 PM

How are you going to clad the cylinders, or aren't you? They do look fine as they are now.


yes I am wondering about the cladding (cleading ?) too, I have quite a bit of "Blued Steel" to do on Agnes, and would be interested to see other people's ideas on doing it before I start.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 19, 2020, 12:41:25 PM
You're ahead of me there Phil - I haven't even found a source for blued steel here, never mind "black Russian iron"  :(

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 19, 2020, 02:41:09 PM
Hello David, Sorry about not replying to your PMs as yet but will do  :)

Yes, making the pushrod and trip links left and right hand threaded certainly appears to have eased the valve setting process.

It'll be a day or two before the air goes on but it's not far off. Revamping those steam chest studs at the moment then I can fit the stop valve and finalise the piping underneath.

Lagging, David (or as you say Phil, 'cleading' pronounced cladding!) - well I was obviously intent on doing so and had mentioned it in previous posts. I bought some (8 thou I think) flat shim steel to make it from and experimented with temperature to produce a nice blue grey colour. After giving what was going to be required a lot of thought I finally decided that I would leave the cylinders in their primer colour 'Ready for lagging' (I see I did mention this back in December 2018  :o - wheres that time gone ::)) The shim sits awaiting another project which might actually see the light of day all being well ;)

Using shim steel is something I did Phil, on the Lang Bridge Double Diagonal engine. By using the tempered shim as opposed to the spring steel the material is easily worked and drilled. The only issue is to keep it totally scratch free before heat treating to obtain the colour as every mark will show up once 'blued'.

The main reason I decided against it using it on this build was scale and time. In scale the brass corner strip would have to be milled as nothing commercially available suited. The width of the inner part of the angle then left very little room for drilling and certainly not enough to use screws. I had considered using 1/32 brass rivets (even bought a load) just pushed into holes - their position on either side holding against each other. Even then the holes would have been extremely close to the edge of the cylinder blocks - given the amount of time this would add to the project I finally realised I rather liked the colour of the primer against the green and decided to leave as is.

When I first had thoughts of this project I was a regular visitor to events where such could be displayed but now as the years begin to stack up this isn't something I'm going to be taking about and in all probability I realise that I'm actually making this for someone else - whoever they might be. They, then, can deal with the lagging and that non working airpump if they chose  ;D

A bit of a cop out but I do have other things I'd like to see done before the end of the perch is reached :old:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on October 19, 2020, 04:11:36 PM
Tug

I have actually bought a little furnace and some digital control gear for it (remember Jo did one a while ago)
The thing is still sat in the box it came in waiting for me to modify its door and put it all together and wire it up.

Can you remember what temperature you ended up with to get the right colour on the shim steel ?

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on October 19, 2020, 05:31:07 PM
Tug,  this engine gets to look more gorgeous by the day!       With Dave's engine and Phil's Agnes you Corliss folk have a great skill set :praise2:
(apologies if I've missed anyone on the Colliss road)             Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on October 20, 2020, 01:37:49 PM
I am wondering why the LP cylinder even needs cutoff (other than looking cool).  The Bolton tandem has a slide valve LP cylinder. 

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 21, 2020, 10:21:11 AM
Hi guy's thanks for looking in  :ThumbsUp:

Phil, that was a while back but as far as I can remember (I did write it down somewhere but can't find it) I think it was around 280c but it doesn't take long to find the optimum. I should have added too - don't have any finger marks on the material. Even the slightest hint will be firmly recorded :)

KV - I guess it would require a cutoff for simply economy reasons - once set to the optimum would be left as is. Tried to find a full size example but so far no luck ::)

Terry You forgot 'Sco's' Lane and Bodley ;D but I guess he'll forgive you - I believe that's well on the back burner at the moment. Thanks for your comment :ThumbsUp:

Now have the steam chests studded up and the stop valve in situ. Inlet pipework done as the rest with JB Weld - certainly impressed with the ease which that has made to doing that job.

Not long now before the air goes on

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on October 21, 2020, 02:09:20 PM
Cheers Tug

I will have to do a bit of experimenting once I get the furnace operational.

As for the manual cut off on the LP cylinder, Agnes has that feature too.
The handwheel and quadrant can be seen in the upper middle part of this photo.
https://www.geograph.org.uk/photo/3764139


Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 21, 2020, 06:40:26 PM
Ah! Thanks for that confirmation Phil  :ThumbsUp:

Sue and I visited Markham Grange just last year - a very impressive museum but despite going on a steaming day the boiler was out of action - only engine working was the electric driven paddle engine. Took quite a few pics as you can imagine but for some reason more than half were (well) out of focus  :( I can't remember why now but I couldn't get to the valve gear side close enough to photograph it.

They were erecting a very large beam engine at the time - guess that's done by now. Certainly go again when we are that way.


I wanted to bring this coffe table home with me but Sue wasn't so keen  :Lol:

(https://lh3.googleusercontent.com/pw/ACtC-3dzGsSIRlU6MBBVpOdHYLumr340NzwsHxokxuHa4-fVgMQyNgRSFBxXjKyajrq2YFX268XhPl7VQLbCVDaJ9L1ayvbuB6sxwuOc4F8mqPYViTubVT8EJYcvEWuU2DQKjnmD9gxqYJyFvtRFg7AHjsr0-w=w1218-h913-no?authuser=0)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 21, 2020, 11:17:00 PM
I can understand her lack of enthusiasm, but I'm sure a stripdown and cleanup, rebuild and coat of nice green machinery paint would change her mind.  :Lol:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on October 21, 2020, 11:20:46 PM
I can understand her lack of enthusiasm, but I'm sure a stripdown and cleanup, rebuild and coat of nice green machinery paint would change her mind.  :Lol:


Sounds kind of nasty to.... Oooohhh, to the ENGINE....    :lolb:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 21, 2020, 11:24:56 PM
You know - I was kind of waiting for that!

Somehow not surprised it was you Chris.

 :lolb:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on October 22, 2020, 12:06:49 AM
Ramon, I hope you pumped the waiter for some more info on that table base....... :Lol:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on October 22, 2020, 10:51:19 AM
Hi Ramon, while following closely, learning and being inspired by your beautiful craftsmanship, as you might expect, I have also been following with interest the side banter about the governor action and LP cylinder cutoff.  And not surprising that I might look for the answer in the thermodynamics.  After taking some time to get my thoughts straight, I hope I can provide a clear explanation for those interested who do not already know the answer.

The governor of course matches the energy input to the engine to match the load by controlling the steam input to the engine, and of course the steam input is to the HP cylinder.  Once the steam is in the engine, it all goes through the both cylinders, and the flow in the LP cylinder cannot be independently controlled unless you have an extra inlet or exhaust at the IP stage.  But that part has been covered already.

The considerations for the LP cutoff are more interesting.  It is not really intuitive what the ideal  intermediate pressure for a compound should be, but the maths tells us that the ratio of absolute pressure across each stage should be equal for maximum work output for a given steam flow.  The designer uses this principle to arrive at the optimum dimensions for the cylinder diameters and valve timing.  However the calculations only give the answer for the assumed inlet discharge and load conditions.  (This principle applies to reciprocating engines, compressors, and also to multistage turbines.  My experience of multistage machines is with compressors, reciprocating and centrifugal, and to a lesser extent, turbines.)

With the physical dimensions set, the intermediate chamber pressure floats to the level necessary to make the LP cylinder flow exactly equal the HP cylinder flow.  If the intermediate pressure (IP) rises, the resultant higher density increases the mass flow through the LP so prevents the IP rising further.  Similarly for lower IP which reduces the mass flow through the LP cylinder.

This leads to the purpose of that hand control for the cutoff on the LP cylinder.  For a given steady load on the machine, early cutoff reduces the volume flow through the LP, and that IP will float higher.  Similarly late cutoff increases the volumetric flow through the LP, so the IP will float down.  So by adjusting the LP cutoff, the engineer can adjust that IP pressure, and so optimise the efficiency of the engine. 

It would be very complex to design a linkage that would make the correct adjustment to the LP cutoff in step with controlling the flow to the HP with a continuously varying load on the engine.  But with a steady load for a long time, say a ship crossing an ocean, thermodynamics tells the engineer to adjust the LP cylinder cutoff to get those pressure ratios equal, and so save some fuel consumption.  An experienced engineer, familiar with his engine probably has a much more practical way of understanding when the engine is running just right, and in all likelihood that is also the most efficient.  If automatic control is required, I would suggest a pressure controller measuring the intermediate pressure to adjust the LP cutoff might do the job, but the optimum set point would change with steam conditions, engine speed and load, so still not a totally clear answer.

The operation of compound engines and compressors is mysterious and endlessly fascinating, but I hope that explanation helps those who are interested to understand the process a little more clearly.

In the mean time, I am really enjoying following your build.

MJM460

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 22, 2020, 01:10:04 PM
Well that's a lot to take for my old brain MJ but thanks indeed for taking the time to post that explanation  :ThumbsUp: I have to say that I'm first and foremost a model maker and my real goal is to make something as well as I can and have it run well - visually.

The actual dynamics are not that important to me but it's nice to see those who have such an interest take the time to explain - but please, that's not to be dismissive just to say how it is - for me  :)

I will read your post far more carefully later MJ but right now I'd like all who look in to know - it actually bloody runs, and if I'm allowed to say so it appears to run well so far. So far in that I was making a small alteration to the valves and after finally fitting the end caps I realised that technically though only the HP cylinder was coupled up it could potentially run. Couldn't resist - just had to try ;)

Coupled up the air and turned it on - nothing  :( It appeared to have a feeling of ease as the flywheel was turned over so the pressure was turned up and up on the workshop regulator - no improvement there. Then the penny dropped - time to start the compressor ::) By the time I got back in the workshop from the garage there she was ticking over like a good un. Boy, am I chuffed.  :) :) :) Silly grin time

Now I know you'll want a video but wait a while until the second cylinder is coupled up at least.

From tha ol shid then - Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on October 22, 2020, 05:02:29 PM
Congratulations is very much in order here  :cheers:

But as always - without a video it didn't happen  ;)

Best wishes

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 22, 2020, 10:16:54 PM
...........But as always - without a video it didn't happen  ;)

Oh but it did Per, it really did  :D

I let it run for about twenty mins this morning but then had to go out this afternoon - you can guess where my mind was  :Lol:

Once back turned the air back on and just let it tick over while I had a good tidy up and clear of the bench. The action of the linkage is quite mesmerising. I hooked up the governor but this had an immediate detrimental effect, the engine surging unless the pressure was increased to a fast run. First thoughts are that the governor spring - as per drawing - is too weak so that will be changed out to see if that makes any improvement.

I was hoping to get the HP exhaust linked up to the LP cylinder today but some interuption put that back - tomorrow it will have to be so it will be Saturday before I can try both cylinders

Overall though I'm a happy bunny tonight :)

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 22, 2020, 10:23:54 PM
Congratulations Tug! But we really, really want to see that video and hear the sound.

Thank you also to MJM for the explanation of the fundamentals of compounding, I think I almost understand what is going on when the cut-off on the LP cylinder is adjusted.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gary.a.ayres on October 22, 2020, 10:36:20 PM
Ramon - congratulations!

 :cheers:

I look forward to seeing a video of it running when the time is right for you.

gary
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 22, 2020, 10:53:09 PM
David, Gary, my thanks   :)

Have to say David I am really surprised at how well the trip gear is working on this HP cylinder - obviously the LP is being driven at the moment so can't wait to get that on line too.

With the governor disconnected the engine will run very slowly and tick over with those satisfying clicks from the trip gear. It's working far far better than I had thought it would. I have done nothing to the timing - exactly as drawn which says something for old Arnolds design eh.

Hopefully be in a position to take a short video sometime over the weekend - I mean, I can't keep Per waiting too long eh :D

Will PM later with some thoughts

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on October 23, 2020, 12:39:17 PM
Hi Ramon, congratulations on that first run.  A real tribute to the high standard of your work.

And always cause for celebration when an engine first runs.

MJM460

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 24, 2020, 08:12:29 AM
Thanks 'MJ'  :ThumbsUp: Yes it did bring a smile (bloody great grin for quite a while if truth be known ;D)

Had a much more detailed read of your previous post re compounding. I can't comment academically but I can see the logic of only needing to govern the HP cylinder and set the cut off to maximise efficiency in the LP. This surely only applies to steam though - I see running on compressed air a different set of principles but that's based on diving days not engines  ::)

Finally plumbed in the HP cylinder to the LP yesterday again using JBW to bond the pipework. I have every confidence in this product for this application and if it lives up to that expectation then it certainly makes for easy plumbing in situ rather than having to set up separately for silver soldering.

Hopefully there will be something to report a bit later  :)

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on October 24, 2020, 11:35:44 AM
Hi Ramon, same principles whether steam or air, just different numbers, but different operating conditions make for a different optimum setting.   And the changing operating conditions as a diving cylinder fills are truly dreadful from the compressor design point of view.

But for now,we are all on the edge of our seats to see the HP running, preferably in addition to the LP.   So we can discuss the theory later, but don’t want to interrupt progress at this point.

It’s all just for confirmation of course.  We are all confident that it will run and that it will run really well.

MJM460

Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on October 24, 2020, 12:25:55 PM
As I recall from discussion of Jo's triples, connecting the HP's exhaust does almost nothing for the IP or LP.  I expect the same will occur here, and since it's running with the LP as a load, you don't really need to worry about driving the LP.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 24, 2020, 08:00:31 PM
Hi Guys - not such a rewarding day today. First thing was to redo all the gland packing as I had not put sufficient in to give a good seal. Despite packing it in tighly this time the subsequent resistance to movement was barely perceptible

Given how readily the engine was to run on the HP cylinder only the engine was rather reluctant to do so on both. After some consideration I came to the conclusion that the exhaust period is not enough on the HP - yesterday it vented to atmosphere today it had to travel much further - I'm pretty sure the valve events will need quite a bit of tweaking to get that all in synch. One thing I discovered was if I removed the blanks from the drain valve holes the engine picked up speed - at first it sounded like it was exhausting through those points but it soon became obvious that it was the incoming air venting out the respective inlet side drain valve and not the exhaust side. That's what you can hear in the video. Putting the plugs back in slowed the engine considerably - I'm sure the exhaust is shutting too quickly giving compression when it should be exhausting.

One thing is without doubt, the trip gear is working and from my perspective working well - but to coin a well known phrase - the system overall is "playing all the right notes just not in the right order"

If you study the crosshead you can see what appears to be a point of resistance on the up stroke. I assure you that is not a tight spot - the engine is very free indeed but it's a very positive part of the sequence once noted. This has to be a timing issue I'm certain.

Despite this I gave it a considerable run of a couple of hours but know it will need some serious investigation to get all the events in order. I will not persue that at this time but continue on getting the remaining parts machined first.

Anyway for what it's worth and for those of little faith eh Per  ;) heres a short vid - just turn your sound down a bit!

elVgjHt6bQIt=4s

That's it for tonight - been a tiring and not quite such a high kind of day

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on October 24, 2020, 08:32:50 PM
Good to see it running. When it was going slowly I felt  could hear air for a lot longer in one direction than the other which may be it exhausting differently on one stroke to the other.

Still something you should be very proud of :)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on October 24, 2020, 08:35:21 PM
Very close for such a complex system, am sure you will find the sweet spot on all the settings soo. Thanks for the video!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on October 24, 2020, 08:59:07 PM
Oh - so now a little tease = lack of faith ehh  ;D
We have a Danish saying that roughly translates into - You will have to hear a lot (of bs) before your ears fall off ....

Well the work so far is certainly up to your usual standard and it's even more fantastic to gaze at when running  :ThumbsUp:   even if there's still room for improvement (your not my interpretation ;) ).

Thanks for showing us a major milestone in this marvelous project  :cheers:

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 24, 2020, 11:27:38 PM
That's brilliant Tug! Thank you for taking the trouble to make the video and for sharing it.

Seeing the trip gear working, and working so very well, is a huge inspiration to me to keep going with what sometimes feels like an interminable project.

Like Jason I'm hearing much more air noise on the rearward stroke than the other one.

Thinking aloud now - if my current understanding of how the two cylinders work together is correct then both must be working exactly in phase - the rigid piston rod forces this - so the valve events should happen at identical times on both. It follows that the lengths of the links between the two valve gears are critical as are the positions of the two pistons along the piston rod. OK, I'll stop rambling and let you get on making the rest of the bits  :)

Regards, David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on October 25, 2020, 12:23:25 AM
Great vid.   :cheers:  Your hand gives a good appreciation of the size of the engine.

If there is a way to run with only the LP engine fine tuning its valve adjustments would be easier.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on October 25, 2020, 12:42:32 AM
Beautiful Tug!
Lots of interesting motion going on there.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on October 25, 2020, 02:17:02 AM
Wonderfull ,looks and sounds great...another lovely project nearing completion  and now the clocks have gone back we get an extra hour in the workshop !!

willy.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on October 25, 2020, 04:55:51 AM
That is great, Tug!
Thanks for posting the video.
Love seeing all that linkage in motion!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on October 25, 2020, 10:10:58 AM
Wonderful result  :ThumbsUp:    Thanks for the video and all the lessons on the way  :NotWorthy:     Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on October 25, 2020, 10:40:20 AM
Hi Ramon,

Absolutely wonderful to see it running so well.  A real tribute to your work.  And that exquisite OS and Y steam valve with the rising stem just to top it off. 

Yes, I can hear that slightly asymmetric sound.  But if the notes were out of order, I doubt that it would run so sweetly.  I think it could be one just not quite on the beat.  But so close, there is surely not much wrong. 

When thinking about what happens when those plugs are removed, I feel that might be expected when running on such low pressure, and with atmospheric pressure exhaust, when the load and the  pressure profile through the engine is nothing like the profile the designer intended.  I don’t know what pressure is at your compressor discharge, but the pressure the engine sees is the pressure in the steam chest.  And this will be very low, especially when the steam valve is throttling for slow speed.  The expansion of the air as it passes through the engine may be producing pressure below atmospheric within the engine, and when the LP exhaust opens, atmospheric air will first flow in, before being expelled as intended.  This will have an effect on the power produced by the engine, and hence its speed.  Operation will be closer to normal when running on some load so the inlet pressure can be increased.

But sorting that out can come later.  I am sure celebrations are in order now.

MJM460
Title: Re: Tug's Corliss Tandem Compound Project
Post by: astroud on October 25, 2020, 11:03:22 AM
Exquisite !
Beautiful engine and I love the slow tickover and the sound as it slowly speeds up.

congratulations, Andrew
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 25, 2020, 08:41:08 PM
Hi guys - thanks to all for looking in and your kind comments. Particularly Andrew - always nice to see a new name and hear from them  :ThumbsUp:

I have to tell you I don't quite share your thoughts that it's running okay. That extra long stroke you can hear is actually on the upstroke - where it appears to have some resistance but hasn't. I think that at that point air is coming in but the exhaust has already begun to close. I don't know what pressure its running on but it's far higher than anything else and certainly more than I'd hoped for. Hopefully this will reduce significantly once things are in synch

I haven't done anything today save a really good clean down and tidy up - I do tend to gradually end up with a bench in total dis-array as I work  ::) - but have been giving it quite some thought. I think I will try to delay the exhaust opening at the eccentric first but have a sneaking feeling those valves are going to have to come out for a slight modification to give a slightly longer opening.

Whatever I will persevere and come back when things are looking much better

Thanks again everyone - to coin a phrase  - 'I'll be back'

Regards frum tha ol shid - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on October 25, 2020, 08:50:52 PM
Tug

Just remove the LP piston, no one would ever know  >:D

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on October 25, 2020, 09:34:37 PM
Quote
Just remove the LP piston, no one would ever know  >:D
     :ROFL:    :lolb:

I very much doubt that Ramon will settle for that - but thanks for the laugh.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 25, 2020, 10:37:35 PM
Tug

Just remove the LP piston, no one would ever know  >:D

Phil


Ah so that's what youre going to do with Agnes is it - never fear your secret's safe with me ;)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on October 25, 2020, 10:45:19 PM
Just magnificent  :NotWorthy:

Stay well,
Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on October 25, 2020, 11:15:39 PM
Tug

Just remove the LP piston, no one would ever know  >:D

Phil


Ah so that's what youre going to do with Agnes is it - never fear your secret's safe with me ;)


Seriously Tug, I am pretty envious of how your engine is coming along, you are making a super job of it and it does look very smart in that colour scheme with no cleading.

I can only hope that when I finally get retired I will be able to make some real progress on Agnes.
Unfortunately I have another 5 months to go even if I decide to chuck the towel in early at 65, but I will have to wait until 66 to get my state pension, so its looking like 17 months.

Due  to a massive downturn in orders at work due to Covid, I actually got made redundant one Monday in August at 4pm................. the phone rang at 9am on the Tuesday morning with the MD begging me to come back and run the department as my boss had handed his notice in the same day.
Having been there for 32 years I seem to be the only one left who knows how we do things. Its probably just as well because we are on the point of accepting an order for four million pounds worth of bespoke machinery in the next couple of weeks. Guess who will be designing it.  :)

So I had a 17 hour taste of being out of work (I quite liked it actually) but I have at least been working from home since March so am getting used to no travelling.
I still get no extra workshop time though.  :ThumbsDown:

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 26, 2020, 08:22:44 AM
Hello Rod, good to see you here :ThumbsUp: Hope you and Sally have now settled in well down in Christchurch  :)

Phil, thanks :ThumbsUp:  I'm afraid the primer is beginning to wear a little which gives nice worn patina but not quite in keeping with a new model  ::)

I was fortunate to go early from work so have enjoyed near twenty years of not having to. I've been fit and active for all of that save one scare and op but that is now well past - just wish I had another twenty years ahead of the same but the energy levels definitely decline these days with increasing pace. Hope it all goes well for you but always keep it in mind you only get one go at it (retirement) once you've used the time for other matters its gone forever. It really does seem a very short time since I began my time and January brings forth seventy six years - all downhill to eighty  :old: Soon goes I'm afraid.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: john mills on October 26, 2020, 08:43:34 AM
hi Tug

thats a wonderfull model  i have followed the project and it is wonderfull to see it running .
    John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on October 26, 2020, 12:16:12 PM
Tug's video reminds me of this wonderful clip from "Industrial Revelations" with Mark Williams.

https://youtu.be/5ny2Pizgfls?list=PL0QJlKdyUzw0mH1qKhU9SNp92PZYmyU9t&t=719 (https://youtu.be/5ny2Pizgfls?list=PL0QJlKdyUzw0mH1qKhU9SNp92PZYmyU9t&t=719)

Rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 26, 2020, 01:17:45 PM
Thanks for reminding us of what such an enjoyable program that was Rod. Personally don't think anybody could do the subject matter any better than Mark Williams did in those series  :ThumbsUp:  Er! by the way, though mesmerised by the linkage on the Throp I did fall short of dancing to it - maybe that will help get it in synch  :Lol:

Thanks for your comments John  :ThumbsUp:  Sue and I were wondering - you wouldn't happen to be the same John Mills from Essex we met many years ago who built a really super steam lorry - 'J MILLS' on the cab side?  If so sincere regards from both of us and hope you are keeping well.

Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: john mills on October 26, 2020, 09:28:03 PM
Hi   tug

no I am in Melbourne   Australia  .
there are lots of John   Mills   around    i have worked in place where there were 2    and 13   John 's
great to see your engine  running   t is easy to think of the full site large engine starting  the preure in the cylinders rising and the vacuum rising as the engine comes up to speed and under full load.

    regards John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 26, 2020, 10:22:59 PM
Thanks John - bit like those 'Tug Wilsons' eh  ;D

I met the other John on an engineering course - saw him with a copy of Model Engineer in his hands. He was building a steam lorry - Foden I think - and several years later there it was on the cover of ME. Our paths would cross occasionally at shows but I haven't seen him for a long time now - bit of a long shot but I thought I'd ask.

Decided to sort the valve setting out before progressing with the final touches so made a start this afternoon. The inlet sequence appears fine but having marked the opening positions on the side of the cylinder it's easy to see that the exhaust valves are closing way too early - before the cut off in fact!.  After moving it either side the eccentric position looks to be correct as drawn so tomorrow I'm starting at the rocker and making sure that all movements are as equal as possible but it does look as if the exhaust valves, as drawn, will need to be modified to get a longer opening.

For now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 27, 2020, 08:52:55 PM
Hi guys,

Well I'm really pleased to report I have managed to make a significant improvement to the running :).

I began by getting everything as symmetrical about the centre stroke as possible then modified the HP exhaust valve by 0.5mm to get a later closing. I was then able to close those drain valves off and the engine ran very evenly in both directions and very slowly - a timed 60 rpm . It does need a lot of pressure - far more than anticipated but I think I may be able to reduce that some.  I finally fitted a gauge to my shed regulator and was very surprised to find the lowest pressure it would run on was 45psi  :o At a steady beat with the stop valve right open it was 65psi :o :o. I would think it requires this amount of pressure because the cut offs are possibly too early - at a lower pressure there simply isn't enough volume of air to move the piston the full stroke.

So, I took another video only to just find that I didn't ::)

It's obvious that what I actually did do was begin to record as I put the camera down after taking the 'non video'!! You have a an 18.54 minute video of the corner of my gauge block case to the sound track of the much steadier engine beat but I don't think that will make for scintilllating coverage :lolb:  You'll just have to take my word for it ..... Per?  :D

So, I do feel I can now continue with the rest of the cosmetic parts knowing that it runs as well as I could wish for - I'll tweak the cut off to give a longer opening when it's all done.

Back soon then - another engine project is begining to look an attractive follow on but not until this is one is 'completely' done

Regards all - Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on October 27, 2020, 09:16:01 PM
Excellent news!   Engine timing much better, camera timin not so much!  Not that I ever did the same thing. Today anyway...   :wallbang:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: john mills on October 27, 2020, 09:17:37 PM
Hi Tug
it is good to see you could improve the vale events .wanting to run at higher pressure , it is a compound engine
the air has to expand and lower the pressure  then  move to the low pressure cylinder  to expand and drop the pressure further what is the pressure in the low pressure cylinder  then it is meant to exhaust into the vacuum
created by the condenser .if it does not start with a little bit of pressure how would the rest work. thats my thoughts.it is a pleasing result.
             John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on October 27, 2020, 09:52:51 PM
That's great news Tug!

When you say you "modified the exhaust valve by 0.5mm" does that mean machining 0.5 off the flat face of the valve(s)?

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on October 27, 2020, 09:59:44 PM
Oh I'm not complaining here - and just to clarify - I make more than my share of errors ....
+ the only reason I can guarantee that I haven't made that video ups .... is that I do not have a video camera ...!

Great to hear that you got a better result  :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: flopearedmule on October 28, 2020, 01:52:12 AM
Tug
I just spent close to an hour looking through and reading your build.  (I've been gone for awhile)
I have to say, the fine detail you have on this engine is pretty awesome!  Thanks for sharing.  Can't wait to see a video of it running.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 28, 2020, 08:28:59 AM
Thanks guys, good to hear from you all :ThumbsUp:

'Flop ear' - good to see you back on MEM - we all have to take a break at times  :ThumbsUp:.

Per - :) Hope you are well, give John my regards - Loved the Danish expression BTW  ;D

David - Yes, bit of a relief really. I gingerly took 20 thou off the leading edge of the HP valves to make the opening earlier. The LP didn't seem to require any so decided not to and see what happened - as said it improved it considerably but I would think that it could be further improved by slight modification to those also. I intend to revisit those on 'finals' .One thing I would recommend you doing - Make a clear mark across the back of the valve to indicate the position of the flat and scribe small but defined marks of the opening points on the side of the cylinder. (obviously these need to be shorter than the width of flanges (I used masking tape marked up but defined marks would have been so much better).

I appreciate your thoughts on this John, obviously air works different to steam in the compound principle but it does have a 'long way to travel' and if the vents aren't in perfect synch then restrictions will be there if not so obvious now. All my previous engines run well on very low pressure so was hoping this might be the case here to but I'm sure it can be further improved

And as for being in synch Chris - well I really got that one arrs about face eh  ;D

Thanks guys - I'm starting on the handrail stanchions today - quite a few small items to make to tidy this project up but it's the home straight now.

Back soon with pics and a vid once its all done

Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Hugh Currin on October 28, 2020, 02:35:04 PM
Tug:

That reminds me of a video my wife took of an HPV (bicycle) race some time ago. She got out of sync with the "go" button. The result was the video shows the camera being raised to take a shot and as soon as stable turns off. Then come on again as it's lowered showing her feet and the ground. Cycled like this for 15-20 minutes. Ah, technology.

Congratulations. Wonderful build, thank you for sharing.

So, I took another video only to just find that I didn't ::)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on October 29, 2020, 08:52:32 AM
Hello Hugh - nice to see you here, thanks for looking in  :)

Yes easily done I guess. Well before digital cameras I took a whole roll of film of four of us walking in Snowdonia - thing was there was no film in the camera  :facepalm: Quite the popular boy I was  ::)

Hope you are well, stay safe - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on November 07, 2020, 12:12:18 PM
Excellent  :praise2:  :praise2: I do like watching all the complicated linkages and motions  :wine1:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 07, 2020, 01:42:10 PM
Hi Roger - thanks :ThumbsUp:

Yes it is a bit mesmerising. Haven't run it since posting but it's getting there now. Just finished all the handrail stanchions which was a nice exercise on lathe and mill and have them all fitted. Barring rack is just made too and I'm pretty sure that's the last of the ferrous items so now it's the last knockings with a few brassy things and it should soon be done.

Thanks for looking in - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on November 07, 2020, 06:51:46 PM
Hi Ramon

Glad to hear that you almost got the next stage finished  :ThumbsUp:

I should say hello from John too - he hopes that you're doing better than his sister (she hasn't really had any income since the first lock down started and have hardly seen anybody for most of all that time + his parents aren't doing much better).

I had my Offroader / Winter Bike started for the first time in years and out for a short spin today :)
Unfortunately it had to go back in the workshop as the clutch will not de-clutch  :(  but I hope that the workshop will be available for at least one running model engine soon, before it has to do the next bigger project ....

I hope you both are doing fine - best wishes

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 08, 2020, 09:12:54 AM
Hi Per, yes quite close now  ;)

Covid cases creep ever nearer but it has to said we live in a fairly safe area. Our hearts really go out to those less fortunate living in more dense areas and little to do with their time. Give John our regards - we are both fine, the garden and hobbies helping to take our minds off the dreadful news we are all faced with each day.

Good news however on the potential model engine project  :ThumbsUp: I was going to revert back to the plastic but I have found a really nice subject so it's more cast swarf for a week or three once this one is finished  :)

Stay safe - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 09, 2020, 06:56:21 PM
Hi Guys, Ferrous parts all done so spent much of today cleaning down ready for the brass. No pics as yet but they will come :D

It's just that during said clean and tidy I came across the 'lost' correspondence that I had with Peter Southworth after our initial conversation that kicked this project all off. A nice lengthy letter (remember them) dated 28Oct 1998  :o it is more to do with his experiments with PTFE bearings in a turbine powered 5" guage 0-6-0 loco that he was working on at the time (4.5" disc at 35,900rpm according to the letter) So whats this got to do with the Corliss I hear you ask?

Well, the last three line paragraph rather got my attention  - quote (verbatim)

 'How are you getting on with the Corliss engine? One addition that is needed is an oil filled dash pot on the governor to stop it hunting, mine was rather bad. I will design one in due course'. Unquote. (my underline of course)

Interesting to read that after the results with this one eh?

I don't recall ever hearing if he did - due to pressure of work, redundancy etc etc it would not be until well after he had passed away that I would actually begin this engine in earnest. The last I 'heard' from Peter was not long before he went. He had visited the Forncett museum and sent his regards via one of the museum helpers. Pity really as though we spoke many times on the phone and exchange letters I never did meet him - something I would have like to have done.

Despite this, no, I won't be adding a dashpot - well not at this stage that is :D

From tha 'ole shid' - Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on November 09, 2020, 08:39:46 PM
Hi Tug

The Whitehead governor on Agnes has a dashpot, it was the only component on the whole engine where I managed to get hold of Peters original sketches, nobody knows what happened to all his other drawings but the governor one survived.

I have had to do all the drawings for Agnes (including this governor) myself on Solidworks 3D CAD, using a mixture of original P & W drawings and measurements taken from the full size engine.

I have also attached Peter's freehand governor sketch below as a PDF in case you are interested in seeing it.

Phil

Peters diagram

(https://listerengine.com/coppermine/albums/userpics/10026/MISC007.jpg)

My version of the Whitehead governor without the oil needle adjusting screw, the main adjuster thread at the top is 10BA, I didn't fancy boring that out for a needle   :headscratch:

(https://listerengine.com/coppermine/albums/userpics/10026/Workshop_006_11-10-20.jpg)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on November 09, 2020, 09:12:59 PM
Very interesting setup on that governor - the oil piston damper is something I never would have thought of. Acts like a shock absorber on a car or bike? Do you know if that was a common feature on governors on full size engines?
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 09, 2020, 10:49:00 PM
Thanks for that Phil - interesting to see how it's done.

The governor on the Corliss as designed is a Hartnell.(I think I previously eroneously referred to it as a Hargreaves  :facepalm2:)

Arnold Throp, in his article on the single cylinder condensing version in ME refers to it as a 'Wilson Hartnell' Having done a search it would appear on first look that a Wilson Hartnell has two springs, one inner as usual but another connected across the weights. It seems these may have been fitted to diesel engines but the type with a single spring - referred to as a plain 'Hartnell' governor - were used on steam engines. The one thing I note (full size) is the the spring tension should be able to be tensioned by the nut on the top - a feature not possible on mine at the moment (I have a feeling that's as drawn but I may be wrong - will check tomorrow). I'm pretty certain a stronger spring will cure the hunting tendency however but that's as yet to be tried.

Fitting a dashpot in as your post would need a redesign, something I'll also consider at some stage if the stronger spring is not successful. Now I have 'scaled' the engine by the handrail dimensions the governor as fitted is too low really - certainly low enough to present a danger to whoever would open the stop valve  :o An increase in height is definitely on the cards

Thanks for the input, much appreciated :ThumbsUp:

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on November 10, 2020, 12:40:11 PM
Greene engine governor has a dashpot.  How functional any of it would be for the model is dubious.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on November 12, 2020, 05:52:10 AM
Hi Tug,first sheet
I'm a bit late to the party here, we're away from home. In my set of drawings Peter S has titled the first one "Modifications to horizontal Corliss valve engines". On this are drawings for an "Oil filled dashpot" and I've attached what I hope is a usable picture. Fitting it looks to need a small mod to the governor column. Hope this helps.

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 12, 2020, 08:06:36 AM
Hello David, thanks indeed for the drawing  :ThumbsUp:

I had been giving it some thought as to how best to do this and was thinking on similar lines as opposed to modifying it to Phils version. I'm not convinced though that the flow of oil will be able to be effective scaled down to such small areas/volumes - it will need some close tolerance and need to move freely to work for sure. Still it's worth trying - another few days on it won't matter  :)

I haven't seen the drawing you have - as you are aware mine are dyelines copied from Arnolds originals that Peter had - there is no sheet of 'Modifications' included. I wasn't aware that Peter had done anything further to them - anything else of interest on the sheet to be aware of?

Enjoy your break, look forwards to seeing your next progress

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on November 12, 2020, 12:14:26 PM
My question would have to be " what viscosity oil would be used in something this small?"
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on November 12, 2020, 05:37:06 PM
My gut feel on the oil would be to start with 90 weight gear oil as used in rear wheel drive car differential housings. Anything thicker will cause a slow reaction to governer motion, and anything thinner would not resist / arrest the "hunting" motion. But as I said this is just gut feel. It may need a thicker oil yet, and a lot depends on how tight the 3/16" dia piston fits in the reamed 3/16 bore. In this case, .0005" clearance will likely work much differently than .001" clearance. Pity we can't ask Peter Southworth or one of the other guys who have passed on that had first hand knowledge of mill engines and models of them.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 12, 2020, 07:54:34 PM
My question would have to be " what viscosity oil would be used in something this small?"
gbritnell

Hello George, good to see you still looking in  :) - you too 'cnr'

I have no experience with dashpots but my thinking is contrary to cnr's thought and is that this will need to be very thin. As I see it it will depend on the size of bypass either in or around the piston - the smaller that is the thinner it will need to be - I would have thought.  If the oil can't bypass due to being too viscous or bypass area too small it seems to me that would defeat the object.

I notice the notation that 'piston diameter will need adjusting depending on oil thickness and or fit'

I have now decided to go ahead and modify the governor as such (and take the opportunity to make it slightly taller) - we'll have to see how it works out  :)

Thanks for the input guys

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on November 12, 2020, 11:31:44 PM
Been following along silently Tug and love your work; it will be interesting to see what happens with this new governor that is oil dampened.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: john mills on November 13, 2020, 03:06:34 AM
interesting to se the govoner it would be a project units own in a larger scale may be .
my thoughts are thiol would need to be thin those thick sticky geariols would just glue everything .light  thin plain oil   but in this size even just air could be sufficient .
     John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on November 13, 2020, 11:11:14 AM
With the adjusting valve it would be acting like a shock absorber so one could adjust the amount of bypass flow to get the required dampening. I would go for someting really thin, 3in1oil?
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 13, 2020, 01:02:33 PM
Hi George - I'm assuming by 'adjusting valve' you meant the piston?

Yes I was thinking along the lines of 3in1 to but that's not something I like using as it can dry and leave a glaze. I have some very thin slideway oil that I shall try or maybe even hydraulic fluid - loads of choice of course
 
Probably be getting to grips with this mod next week :)

Regards Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 13, 2020, 01:27:01 PM
The problem has been solved guys - cast your eyes no further for the right oil :D

Sue has just assured me that I 'need a light oil for small parts' - Sewing machine oil  ;)

What it is to have an understanding wife eh :)

Regards - T
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on November 13, 2020, 03:50:55 PM
Clock pivot oil might be worth thinking about as well.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 13, 2020, 08:33:40 PM
Thanks for the suggestion Phil but Sue says she hasn't got any of that :Lol:

 :ThumbsUp: Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on November 14, 2020, 03:51:58 PM
Hi Tug

I have a question for you regarding painting models.
Do you brush them or spray them ?

My reason for asking is because I usually brush mine, but I still have a good selection of Badger airbrushes that I havn't used since I built my 3" Ruston tractor many years ago.
I have 150, 200 & 250 models of Badger airbrushes, I always used conventional oil based paint and thinned it down to a milky consistency, but it was such a faff that I have never bothered with spraying since then.

What I am wondering now having watched a few of the plastic model guys airbrushing on Youtube, is whether the more modern water based Acrylic paints would be of any use on model steam engines etc.

Any thoughts ?

Phil

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 14, 2020, 04:22:46 PM
Hi Phil - just come in from the workshop for afternoon tea - been making oilers ::)

Well as you surmise I do do a lot of spraying using an airbrush when plastic modelling. The new generation of acrylics apply very easily and particularly the new AK Real Colour lacquer based acrylic is extremely tough once gone off. That said it has never entered the old cells to even think of using it on ME projects though I can't think of a reason why not. Most of it (though not all) is varying degrees of matt but it does take a clear coat well (preferably, though not essential, a manufacturer compatible product) to enhance a degree of gloss if required.

This Corliss is painted with a Halfords Car paint aerosol. I do not consider it to be a good paint. It is particularly affected by any tiny residue of Loctite for instance.

A paint I have used with really great result is 'CanBrush'. Another aerosol this really is oil resistant and is extremely durable once truly dry. I renovated a model yacht with it and applied their clearcoat over the top. It's resistance to abrasion on the pond walls was  extremely high. May not have the colour you want though.

If - it will be suitable on ME products I would highly recommend the AK Real Colour as mentioned over other readily available acrylics. There are two kinds - polyurethane based - virtually always in poly bottles, and lacquer based that usually come in glass jars or bottles. Real Colour is the latter. Though they will intermix it's best to keep them apart as they can clog up your airbrush if so. It has a very dense pigment - a jar once thinned the right amount makes about 3-4 times the volume. It will work with most thinner but again I would recommend using the right AK product.

Company name is AK Interactive. They do another series of 'real colour' so beware - the one you would want come in small glass screw top jars. There are several suppliers in the UK - a search should find one.

Tamiya acrylics are brilliant to use also but they have one drawback from this perspective - they are definitely not hard wearing and ceratainly not for this application.

Hope that helps some

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on November 14, 2020, 04:43:18 PM
Tug

Thanks for the speedy comprehensive advice, I will have a look into the AK Real Colour paints and maybe give it a try.
Its always best to ask someone who has already done it and got the Tee Shirt  :ThumbsUp:

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 23, 2020, 04:26:56 PM
Hi Guys, just to say work progresses with all brass parts completed this afternoon. Although they are all quite small it's surprising the amount of time they've taken.

Last part made was the dashpot for the governor mod and contrary to mine and George's thinking it appears 'CNR' was on the right lines. I tried the thin slideway oil but moving the piston by hand there seemed little restriction with a one thou annular gap. It certainly doesn't feel if it would have any dampening effect.

A slightly thicker Tonna T38 oil didn't prove much better and thinking of cnrs suggestion tried the nearest thing I have to 90 weight - steam oil. This appears to be just about in the right area - firm but moveable.

Haven't taken any pics of this latest work but it's not going to be too long before it is totally finished - trouble is I keep finding small things to add to it - having found some 1mm copper tubing have decided to try and make a working lubricator to finish.

But for now, it's time to clear up all this brass swarf :)

Regards to all - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on November 23, 2020, 04:37:30 PM
Glad to hear about your damping experiments. Making that kind of mechanism work in small sizes is not easy. May still take some experimentation to "dial it in". Good luck with the tests!   :cheers:

I have never worked with 1 mm copper tube. Soldering it without the solder "jumping inside" may be challenging. I have worked with 1/16" dia copper on liquid filled thermostat operating gizmo's and the "jumping inside" was an issue there. Very careful flux placement and the bare minimum amount of solder helped a lot with the 1/16" tube. Hope this helps if you are soldering the 1 mm tube. Love to see some pics as you make the lubricator!  :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on November 23, 2020, 05:32:26 PM
- trouble is I keep finding small things to add to it -

Isn't that the truth; all those last minute details that you think will be 'quick' but end up taking much more time that you anticipate.

Can't wait to see the finished product Tug.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on November 23, 2020, 05:42:21 PM
Anyone who complains about tiny brass parts should read Britnell's road grader thread.   :naughty:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on November 23, 2020, 07:48:55 PM
Great news Tug - looking forward to pictures etc.  :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 24, 2020, 08:11:14 AM
'Morning Guys - thanks for looking in.

CNR I'm hoping I can make a working lubricator but the pipework is going to be a testing exercise - even 1mm diameter will be overscale. I'm intending to make swaged ends on the piping rather than soldering to nipples - but the real issue will be making a 'scale' sized container large enough to contain a pump. The steam chest covers are going to have to come off for some mods too. Failing that it will have to be like a couple of other items - a dummy ::)

Well, as they say - "It'll be done when it'll be done"  :)

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on November 24, 2020, 01:28:29 PM
Hi Ramon, what box size do you plan to do for the lubricator? I have a few published plans collected over the years for various lubricators for small locomotives. One of these may be usable if it fits the box size. I'll have a look if you can tell me the box LWH.

If it happens that you find the box size is too small to use a mechanical luber design, could the scale size box become just a distribution point to the small lines, supplied from a separate pump say in the model's base? Just a thought.   :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on November 24, 2020, 05:47:15 PM
Hi Ramon,
While it would be neat to have a working mechanical lubricators in that scale why not just make, externally, what looks like a lubricator with linkage and pipework. If you would ever operate it on steam you could put a displacement lubricator in the feed line. Some things just aren't practical when you get that small.
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 24, 2020, 06:47:52 PM
Hi Guys, it's always appreciated when someone replies and none more so than this time. Sometimes it's hard to see the wood from the trees when 'mindset' is set in

I really had been focussed on how to get a tiny cylinder (working) inside a none too big box. I had checked the odd few drawings of lubers I have but CNR's post turned things around  ;D What a damn good idea and George has now reinforced it - thanks guys, much appreciated.

As I do not intend to run this on steam George  a 'displacement' lubricator is out but I can have a resevoir feeding a dummy 'working' box (as scale as fittings will allow). I'm thinking that the resevoir could take the shape of the average displacement lubricator with a tight fitting cap. This can be situated as you suggest beneath the base with access via on of those redundant chequer plated holes originally cut in for the slide valve set up. If this could be pressurised slightly by a bleed off from the main stop valve this could be piped to said distributer block with dummy 'works'.

The more I think about it the more attractive it appeals - only downside is that the finish ETA is slightly put back but whats a couple of more weeks here and there.

Thanks for the offer of drawings cnr but I don't think I'll be needing them now ;)

The piping isn't going to arrive for a fortnight - that's going to be a long wait  ::)

Thanks again guys - back soon

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on November 25, 2020, 12:05:19 AM
 :ThumbsUp:  Glad the idea was useful. Look forward to seeing the lubricator / distribution box as the build continues.  :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 25, 2020, 12:51:35 PM
Just came back from a really nice beach walk with Sue. Gave me time to muse over this a bit more.

Actually I don't think this will work as said - there being no pressure differential between the initial air and that in the steam chests (sorry about the mix but you know what I mean) - well certainly in the HP - the drop to the LP possibly being a different matter.  The take off from the stop valve is on the down side of regulation, couple that with the drag in such very small piping I think a pressurised vessel will require considerably more pressure than the running pressure - not something I want to pursue due to having to break into existing pipe work.

Thinking then is to replace the air pressurised oil vessel with a screw type plunger which should be able to force the oil through as required e.g. like a stuffer box only oil instead of grease.

When I have run my other engines at shows etc - I usually squeeze a good slug of steam oil into the airline inlet port before coupling up the airline. Not exactly scientific but it works. This is fine for single and twin cylinders with common inlet piping but the pathway to the LP cylinder is a longway from that initial air inlet on this engine

Any thoughts or comments before I get too far on this?

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on November 25, 2020, 01:34:13 PM
Ramon, you could make a small version of the central oiling system found on some of the CNC machines. A spring loaded plunger is drawn back which fills the pump cavity with oil from a  container and then the spring provides the pressure to push the oil through the pipework to the various parts of the machine. The small openings in the pipework means the plunger takes 30 secs or so to return to the start. You only give t a pump once in a while.

If you can't picture what I'm describing let me know and I'll video the one on my machine

https://www.arceurotrade.co.uk/Catalogue/Machine-Spares/One-Shot-Lubrication-System

The other option is to add an air tool lubricator to your airline just before the engine which draws up a small adjustable amount of oil into the air flow which would get carried through the valves, HP and exhaust into the LP valves and then cylinder

https://www.toolstation.com/air-filter-regulator-lubricator/p36390

Naughty Nick had one for his engines, look at 2.30 in

qpQ7O6TMyP0
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 25, 2020, 02:07:56 PM
Thanks for the input Jason, yes I am familiar with one shot systems - we had them on the Bridgeports and yes I could - do have infact - an oil resevoir/regulator set up though never use oil in it. Personally I'd rather not go down that route though as I do like the way steam oil coats all surfaces used as previously described.

This has begun more from wanting to fit a 'working' but 'in scale' lubricator to this engine. It would be nice to think that though a conventional working model lubricator would be a bit too large CNR's idea of a remote one has certainly made the prospect a viable one. The problem there is the direct linkage required - not something possible without some major strip down and alteration involved.

Your thought on the 'one shot' is another option however - thanks indeed :ThumbsUp: Just have to see if I can come up with some thing small but effective enough.

Stay well

Regards - Ramon



Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on November 25, 2020, 02:46:51 PM
What sort of size do you think a mechanical one would have to be? The Minnie one fits into a 5/8" cube and could possibly be made even smaller

Full size has been known to just clamp the drive link to the valve rod
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on November 25, 2020, 04:30:40 PM
Hi Ramon, maybe one like the link below could be hidden in the base and powered by a "wall wart" 250 VAC to 12 VDC converter. It would only need to be switched on periodically. You could use the 12 VDC for engine room lights at the pressure gauge maybe, too. Just food for thought. The pumps are rated for gasoline/petrol and diesel so would be fine from the chem resistance aspect for lube oil. However I am not sure if they will pump high viscosity heavy lube oil - testing needed for that.

https://www.aircraftspruce.ca/catalog/pnpages/05-10856.php?gclid=CjwKCAiAnvj9BRA4EiwAuUMDf6xjI2xJcWTs7v-GosJX7knGVoqPbmjwofj2dAp-EsSBhknv2lT4VxoCDMEQAvD_BwE
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 25, 2020, 07:01:10 PM
Hi guys - thanks for this further input but at this stage cnr I don't want to have an independant power source - your thoughts are much appreciated though.

I was thinking of linkage to a pump beneath the base there Jason - not really a viable proposition now the engine is erected. I was intending to drive the 'lubricator' (dummy or working) from a clamp on the valve rocker rod as you suggest.

After my last post I went out to see if I could come up with something that would be totally unobtrusive and based on cnr's first suggestion. I kept coming back to an air pressurised resevoir but could not see a way to do this without some serious buggering about underneath the base. In desperation I took a look at the stop valve - so far dismissed - and the possibilty was there of drilling a bypass through to the take off which would allow initial pressure being tapped off. This would allow the system to work independant of running pressure. So, drilling successfully acomplished I think it will work - only way to find out is to try so will set too in the morning :)

The other good news is that I found a couple of lengths of small bore copper tube that can be used for the plumbing before the dummy lubricator/distribution block.

All that said Jason I'm intrigued by a 5/8 cubed version - any chance of posting a sketch of it?

Thanks again guys - I'm getting a real good enjoyment factor out of this addition - have to keep going now :ThumbsUp:

Regards - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on November 25, 2020, 08:48:20 PM
Should all be here, mainly the last two

https://www.model-engineer.co.uk/sites/7/documents/me-3399.pdf
https://www.model-engineer.co.uk/sites/7/documents/me-3400.pdf
https://www.model-engineer.co.uk/sites/7/documents/me-3401.pdf
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on November 25, 2020, 10:33:49 PM
Thanks Jason, duly printed off and ready for bed time reading  :ThumbsUp:

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 03, 2020, 02:11:53 PM
Hi Guys, just to say silence doesn't mean nothings happening!

I've finally settled for a pressured resevoir beneath the plinth as previously considered using incoming air pressure bypassing the main stop valve. That's now made and fitted and I'm just in the throes of piping up to the valve and the dummy lubricator/distribution point. It all looks viable but whether that thick old steam oil will get down that microbore of the 1mm tube is as yet to be seen.

Making nipples and nuts with a 2mm thread is a whole new experience too  :)

Hope to be able to test this tomorrow.

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 03, 2020, 03:05:56 PM
Hi Tug

For some reason I'm not able to see the photos.  :stickpoke::lolb:

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 03, 2020, 09:02:02 PM
Well Hell Dave neither am I :Lol:

Actually I haven't taken any whilst doing all these small brassy bits but heres a small update taken tonight to keep you smilin'

(https://lh3.googleusercontent.com/pw/ACtC-3dTziAfApglHf2v93DcAJyfyAnMRWLmIOMxVdqsPWzeZgmtJa_IQaFj_rH8Enne7O34CEGrf0hvXt-bA0-N6NmX4I4-QDVDZ54qlZdb2ps2bwsJuFUpsgclEAsFSnyAYJgNH2PoqeHA1t9hdPfNRvueFA=w1218-h913-no?authuser=0)
 
Still a few bits to do but not far off now  :)

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 03, 2020, 09:15:42 PM
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 03, 2020, 09:31:31 PM
Wow - poetry, soon to be in motion!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 04, 2020, 05:56:27 AM
It's beautiful, Tug!   :popcorn: :popcorn:
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 04, 2020, 04:11:59 PM
That look great Tug!
There are some pretty fussy little parts there, nice job.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 04, 2020, 07:38:19 PM
Whoa - another show of your level of accuracy (of what could have been part off the installation)  :praise2:

Kind of makes one wonder if this is an engine, a Museum Display Model or a piece of Art ....  :thinking:

Oh and I fully understand that you do it this way because this is what gives you pleasure - not in order to impress others .... though we are anyway .... like with a number of other peoples work on this site  :cheers:

Take care and thanks for showing Tug  :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 07, 2020, 09:02:19 AM
Hi Guys just to say I've finally finished with the brass  ::) and happy about that too - not one of my favourite materials to machine.

Just the governor mods to do and some pipework on the condenser along with the final 1mm pipework on the lube 'system'. Talking of that I think these are the smallest 'accuratly dimensioned' things I've ever made. Olives for said pipe at 1 mm bore x 1.6 od and a 30 degree taper. Well aware it's not watchmaking its as close as I want to get though!  With  the diameters the same they require a slight tweaking with a fine needle file to fit the pipe and will be located with a smear of loctite rather than an attempt to solder them in place

(https://lh3.googleusercontent.com/pw/ACtC-3cE2BEo5hUdJWNmPzXx8MRQ7oME27_nNWZxUSSNbpZDUXMJiVlqqWDk-RJvFMVdM4m7o-0AbW3_F6hiBk47nLSOGHrBW13iHxGCiPTVEkqeO935Pc7ef1L0_RO5H5uuHGdoM359wGRmwf9VTF0dWczcag=w1218-h913-no?authuser=0)

Also need to do some glass cutting but more on that later.

Thanks for looking in guys - not long to go now  :ThumbsUp:

Regards - Tug


Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 07, 2020, 01:04:26 PM
Hi Ramon, where did you find the 3 foot long 8BA wrench?  Oh wait.......... :Lol:    :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 17, 2020, 09:37:52 PM
Hi Guys - despite the lack of posting I have been beavering away to get this all wrapped up before the festive season (Hmm what festive season)

nearly there but thought you might like to see the governor mod ready to fit. Doesn't look much but the time it's taken is well out of proportion to it's image. Also took the opportunity to add a raising block which caused a few fit issues but after several assembly and dis-assemblies today it's working okay

(https://lh3.googleusercontent.com/pw/ACtC-3coaLkI_CmzomzaLulU2DitJDHF4w_bYm7uW0RB6KwG6JMgl0JMcpUovlyt5SmSw6PcZ0r758fs4Dz4lo4R8WPkWBkGee_Hfp1J-hU3GsONE5NVNrkQ8XGsKawk4RRk2OU6SaA8vpUu_tG4uYy3DvIl-Q=w1218-h913-no?authuser=0)

The dashpot is much smaller than that designed - that looked a bit overscale - but it works okay using the steam oil as before.

Not long now and I'll 'reveal all' - very little left to do

Regards - Tug

PS cnr - spanner now back in the box marked 'extra big spanners' ;)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 17, 2020, 10:37:29 PM
Looks fabulous Tug  :ThumbsUp:

I hope you and Sue enjoy the Xmas whatever the circumstances.

Best wishes

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 18, 2020, 12:34:41 AM
That looks great Tug.

Your attention to detail is really going to show in the quality of the final model!

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 18, 2020, 02:05:26 PM
Looking great Ramon.   :ThumbsUp: :ThumbsUp: :ThumbsUp:

 I'll bet the 2 ton overhead hoist came in handy getting that big spanner back in the box.  :Lol:    :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 18, 2020, 07:49:30 PM
Hi Guys - thanks for looking in  :ThumbsUp:

Well to coin a phrase 'The end is nigh'! but there are still a couple of small items that need attention.
One of them was the need to do some glass cutting - no not 4mm thick for a case but something a tad thinner!

This afternoon I cut four pieces 8mm x 11.5mm from a microsope glass slide. I purchased a pack of 50 to hedge the expected potential scrappage. When they first arrived about a month ago I had a quick tentative go but three slides later decided it needed a slightly more controlled approach rather than the quick have a go and see what happens scenario!

So, taking my time I managed to get all five 8mm wide strips plus one scrap from one slide then successfully cut the 11.5 length on four of them - I used a carbide scriber made from an old discarded cutter and lubricated it with white spirit. Once scribed and placed over the wire along the line the glass cracked quite uniformly under finger pressure.

This is the 'kit' and the remaining waste glass - the pencil lines are the  dimensions required. There are  about five sheets of copy paper underneath to provide some give when pressing down on the scriber.
(https://lh3.googleusercontent.com/pw/ACtC-3doxvRkamw9dkWUeqsUE0SkdiUgwAsvxDm2ZmzDyn0w_agip8InjzeKy9OxS7vjobbJ7CiUDbEpFCTyzQtO0Yf9aMz-ukHm86DVbrnaVMNg4vTeRE4iR9ZCnYVC_oBPpSGtPKQ_u54SLjKdiqn3guivkg=w1207-h905-no?authuser=0)

These are the actual pieces required along with their receptacles (oilers for the main bearings)
(https://lh3.googleusercontent.com/pw/ACtC-3e5rWFtzI2CPWwIEsV1GsO8gUP03ccu97ljXlAXY-9vpHERYw9vIJv-1Q10HmZlA7XICgCMSasE8-ZV0qlb4ZA5ud1kT68V1xwqnICR6uv_h8TBQMfYW8pdvuUcusTPzeGBGBdHyx_2QIlj-F7cGzSZJQ=w1207-h905-no?authuser=0)

Yet one more fiddly little job accomplished these will get epoxied in place tomorrow  :)

Regards for now - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 20, 2020, 12:40:08 PM
Well I'm pleased to report that the initial test on the lube system proved successful up to the outlets on the distribution block. Whether it will push it further through the microbore tube remains to be discovered.

(https://lh3.googleusercontent.com/pw/ACtC-3d4c0HW87lQkdpsyaMJyb6xqo1eLfLyJVqBwkckZoY9UrVzva51UHyQCB8MP5JH-W9bmSI2ZJnbS_C5CrtLCXfWcDwSIUDZIIGGXq-56C_OHQcHbPkc6e0Fe4mfwkROeYDTFxsAPz8_QQ3e7y3onGpgmg=w1218-h913-no?authuser=0)

It has raised another mod required though in that, of course, a check valve will need to be put into the system somewhere - I think I may be able to modify the inlet to the block to act as such.

Biggest problem at the moment is computer based - I have been having real problems opening pages and particular my photos - this one pic has take the best part of the morning trying at intervals to get it into the album to be able to post.

It is intermittent - sometimes a blank page with 'This site cannot be reached - Google has taken to long to respond' message quickly followed by another blank page with 'No internet connection' and everything just sitting there sulking.

The internet connection is bloody secured and connected however.

Does not bode well  :(

Time for an upgrade in the New Year me thinks

Regards - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on December 20, 2020, 01:56:33 PM
wow this is just Wonderfull ...I am in awe... this is usually termed  "Museum Quality "  Love it  :praise2: :praise2: :praise2:

Willy
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 20, 2020, 07:26:28 PM
Hi Willy - How are you? I hope you are keeping well with all that's going on around us.

Not so sure about the 'museum quality' but it will be going to Forncett - hopefully.

Stay safe - hope to catch up with you sometime next year

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 20, 2020, 10:18:45 PM
 :ThumbsUp: :ThumbsUp: :ThumbsUp: :popcorn: :popcorn: :popcorn:  looking great Ramon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 20, 2020, 10:40:42 PM
Great finish and proportions, terrific!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 21, 2020, 12:35:06 AM
Beautiful work Tug, looks very much like it might have been part of the original engine.

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on December 21, 2020, 04:47:16 PM
Hi Tug, saw you were waiting for small bore copper pipe ...I have quite a lot ..removed from dumped fridges on my crepuscular perambulations ,!! so if you need any let me know and it can be forthcoming !!!...yup I am doing ok and keeping well...I have my allotment to keep me busy,  so ..the days are getting longer now as well !

Keep up the good work..  Also just wondering about the Anson Museum beam engine ....are the motion straps upside down ??

Willy
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 21, 2020, 09:13:51 PM
I think they may be, I am used to seeing the open part of the wedged bearing on the bottom. Though they will work either way!

(https://i.postimg.cc/pV7SSDyX/DSC-7688.jpg)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 21, 2020, 11:21:29 PM
Hi Willy, thanks for the offer but the job is now near finished - two pipes done then a bit of a set back  ::)

Cutting the third pipe using a new sharp scalpel I had the preformed pipe hanging over the edge of the bench whilst I rolled the blade to cut the surplus to length my left hand slightly below to catch the cut off pipe. Pressing down as you would the scalpel slipped off the bench and across the tip of my left hand index finger and deeply (and I do mean deep!) into the tip of the middle finger. Lot's and lots of the red stuff and subcutaneous tissue poking out, it really did need stitching but there was no way I was going to A and E at this time. Steri strips seems to have got a grip of it so fingers crossed. Funnily enough the much slighter cut across the tip of the index finger is the one producing the gip!  That old diving adage of always cut towards your mate obviously not paramount today  ::)

Anyway, after a short interlude it was back to the shed.

If Phil 'PG100' is reading this then this splash guard was done at approx 320-340 C (on my gauge - don't know how accurate that is) Test piece on the right part - the guard was in slightly longer, about 8 mins

(https://lh3.googleusercontent.com/pw/ACtC-3eGA5fVOc18V-y5Hwz0fJ1Zdt2C8qrAASVD6yz6bQOBmAoxwyJB9xWpGBbGuHr3dNQjRFG68FzHd3E9hPa4KxFWC5WUfA3EsfU-E4eBDfBOWauBJP9rj5N4W3D2ZJC59dwsa8I4aKFeicifRcnsyvLJwg=w1142-h856-no?authuser=0)


The 2.4 diameter brass 'beading' was slit with a saw and loctited on
(https://lh3.googleusercontent.com/pw/ACtC-3dSLpwJxVqZ4q3q-60uAB1PCvMyE7h9LVvlFrjUgPLQKRFiE9LYTfoCRAlvrAC9rs8xFP_rTOdDpiTBZxrMzyD3joOqWwP9JBJ6b3XhTmPuSS2CK6jnsySgegRB_Q5whyJN96cLpj1HZrvLwNfQDC_Bfw=w1142-h856-no?authuser=0)

Just need to fit that tomorrow and finish those pipes then I'll take a last look at the timing before calling this done :)



Are the motion straps upside down? Well they may well be Willy but then there are so many variables in these engines they may not - they don't 'look' right though


Regards - Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 22, 2020, 09:43:28 PM
Well guys, some of you may be pleased to hear that the lube system works as hoped for  :)

My anticipation that the steam oil viscosity would be an issue in those micro bores proved unfounded and within seconds of cracking the valve, steam oil slowly, but steadily, seeped from all four pipes disconnected at the outlet end - bingo!

(https://lh3.googleusercontent.com/pw/ACtC-3fImMVtdhJGM3O5DVI-rc0fpdsJuu26QwSljl6wo5atgsb7qaFKMdvENpn7U3INNYbaecEKS9zM3hd-ItMPopslQ3sh3nPOIJ17zzGRVUgvY9Vz2JSgSY2BqtLIpm0_1tjIFKOeXbYU0MeqnA2HkjnaRA=w1207-h905-no?authuser=0)

With this established (and fitting those tiny olives and unions did prove a tad tedious) the train finally rolled into the station at about 6.30 this evening - Journeys end at last ::)

It's been another very enjoyable project if a bit less documented than the Wide a Wake but for those who have followed along I hope you've enjoyed it as much as I have.

I shall have a real good clear up now before getting it into a better place for photographing and of course hopefully a video of it running but that will be a day or two as yet given the timing (of the year)!

In the meantime, not only is the engine finished but I went the extra mile and did you a personalised smiley - as some one I know well would have it - y'all have a good time ya hear  :cheers:

Regards to you all from the ol shid - Tug

Courtesy of a well misplaced scalpel - remember always cut toward your mate  :Lol:
(https://lh3.googleusercontent.com/pw/ACtC-3ffIpKkWuqp6xAxWzke6D_mMC97QN8QARVEHjzvr_SfgVVqrMr4Ht3VE-oD5vVJmK6GHQMuynaFMeqRJ80qatlGDKNbitg6mEBWaopRz4nKUENzf5plkhDtVMR4UamChOKm_eCIi962M8FEoCbe49yPIQ=w1207-h905-no?authuser=0)

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 22, 2020, 10:35:49 PM
Congratulations on a very fine build and thank you for taking us all along on the journey  :cheers:

You must be very pleased with the whole result - except for the finger, that could look better (something about the teeth)  :praise2:

Have a merry Christmas with Sue, Ramon - best wishes from here.

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 22, 2020, 10:40:45 PM
The oil delivery looks great Ramon. Sorry about your finger, but at least it looks happy during the recovery! Look forward to see the engine run video.   :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 22, 2020, 10:44:41 PM
Well done that man............Looking forward to the video.

Thanks for the info regarding the bluing temperature by the way.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 23, 2020, 01:06:33 AM
Nice!
No not the finger but the oiling system is wonderful!

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 24, 2020, 10:02:16 PM
Hi Per, cnr, Phil and Dave, thanks for looking in  :ThumbsUp: ( I guess the other 215  :o visitors since posting it must have been offended by my attempt to put a bit of humour in with that smilie  :lolb:)

As mentioned before I have been having really frustrating but very inconsistent computer problems. Pages either open slowly or simply not at all so I don't know if this is going to work. I have taken a video today after a final tweaking of the inlet valves to give a slightly longer opening. That has made a difference but not as much as hoped however it will now run on 25psi - still a bit high for my liking but much better than 60!

I have managed to get the video on you tube but don't seem to be having any success on here using the you tube insert - just a blank space in the preview where the you tube screen should be .... it won't even copy and paste the you tube link either


So - I can only say if you want to watch it putting RFW423 into the search bar in You Tube should get you there.

Given the issues I'm not even going to try to upload photos into my account - everything's going on hold until the new year and with us now going into tier four that may be some time before I can get this fixed or updated so I'm going offline until further notice

Have as good a Xmas as you can

That's it from tha ol shid for sometime

Ol Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 24, 2020, 10:17:20 PM
Found the video

It looks brilliant.
81Dny03oKuA
Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: crueby on December 24, 2020, 10:21:10 PM
Absolutely stunning!!   :NotWorthy:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gadabout on December 24, 2020, 10:23:28 PM
Ramon!!! What a masterpiece , absolutely  brilliant, mesmerising to watch!!
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on December 24, 2020, 11:20:30 PM
Beautiful job Ramon, like a Swiss watch. Merry Christmas!  :ThumbsUp: :ThumbsUp: :ThumbsUp:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: MJM460 on December 25, 2020, 12:12:32 AM
Beautiful Ramon, wonderful to see it working so well.  Such an interesting valve mechanism to watch in operation.  Impressive workmanship in every detail.  As usual with your builds, it has been fascinating and instructive to follow.  Words seem inadequate.  And a beautifully made video despite your computer problems.

Thanks to Phil for finding it for us.

I must say I liked your sense of humour with the finger, but it’s a pity it had to be such a painful experience.  Just too easy for these little slips to happen.

Have a very joyful Christmas despite the inconvenience of lockdown, and a happy and safe new year.

MJM460

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dave Otto on December 25, 2020, 12:59:01 AM
Wow! what a Master Piece!
Absolutely beautiful work and result!

Dave
Title: Re: Tug's Corliss Tandem Compound Project
Post by: fumopuc on December 25, 2020, 06:41:24 AM
Hi Tug, a beautiful piece of art. Running so smoothly in low revs. Great job.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on December 25, 2020, 07:06:32 AM
Another top notch model as we have all come to expect from you, thanks for sharing the build with us in your usual informative way.

Happy Xmas.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on December 25, 2020, 07:24:39 AM
Amazing Tug!  I love watching the valve gear snap into place.  Its just beautiful to watch!
Thanks for fighting the posting demons and getting the video uploaded.  It was well worth it!

Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: sco on December 25, 2020, 10:36:59 AM
Absolutely terrific Tug!  What an awesome piece of work - love all the details in the hand rails, oiling system, guard etc.

Top job!

Merry Christmas to you and Sue,

Simon.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on December 25, 2020, 01:11:23 PM
Amazing work.  Seeing your fingers at the start surprised me as to the size of the cylinders.  I had supposed they were a good bit larger, and thus the detail work even more impressive.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on December 25, 2020, 07:03:16 PM
What a fantastic result Ramon - you should be very happy with it  :praise2:
I can't add any that haven't already been said - but I enjoyed watching the video.

Seeing it running, the flywheel kind of reminds me of the big steam engine in the Transport Museum in Glasgow. Here the cable(s) running round the flywheel down to the subway tunnel below where it pulls the coaches. The driver had a few handles - one of them engaged a "brake/clutch", round the cable. With that one active, the coach moved along the line. Another one braked the "wheels on the car" and the last one was an emergency wire cutter - in case the "clutch" wouldn't release. With this system they avoided steam and most of the bad air in the tunnels.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: scc on December 25, 2020, 07:11:26 PM
Absolutely BEAUTIFUL :ThumbsUp: :praise2: :praise2:   Thanks for posting in such detail.      Terry
Title: Re: Tug's Corliss Tandem Compound Project
Post by: derekwarner on December 25, 2020, 10:35:32 PM
The triggering movement for the steam valving is  :hammerbash: even at the estimated 120 RPM for the majority of the video...absolutely amazing

The background music of Herr Beethoven's Fur Elise? commencing @ 0:26 seconds is in a complimentary rhythm with the engine movement

So the main steam valve [with the rising spindle] also has an isolation valve tapped into the main valve body....is the for an unloading function of steam from the pressure side of the main valve piston seat?

A fitting show for Christmas....thanks for sharing

Derek
 
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 26, 2020, 08:15:49 AM
Just back from Christmas with very limited internet access and I find a wonderful present from Tug. Thank you!

I probably won't reach near the same standards but at least I know for sure that a Throp-Southworth tandem Corliss will work, and work brilliantly.

I really hope that Bob Potter can get to see this.

Regards, and best wishes for 2021,

David
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 26, 2020, 11:35:04 AM
Hi Guys - Sue just told me this is working a bit better this morning so I'll have a try.

Thank you all for the kind comments - I'm just glad you could see the video. It's still a blank area in Phil's post so something is totally awry on this PC (7 years old). Thanks Phil for doing that.

Derek, nice to see you here - hope you are well. The 'isolation valve' has full pressure of incoming air (the engine will only be run on air with me these days) which is used to pressurise the lubrication system - the lubricator is just a distribution block described in previous posts.  Top marks for Beethoven - Moonlight Sonata though. It's on a disc of music accompanying  'thunderstorms' played when Radio Three gets a bit too avante guarde!

Simon nice to hear from you too - been a while. Hope this inspires you to finish yours maybe we'll get to Forncett this year - fingers crossed. All the best for the New Year to you and Wendy.

Well guys - hopefully this will post without too much issue. I'm going to have a short break but have another project in the offing so will be back - but not before this computer is replaced - going into Tier Four may have an effect on that happening soon however and it's far too frustrating to keep on trying to upload images.

Thanks again to all who look in whether you comment or not - it's all much appreciated.

Back soon - Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: pgp001 on December 26, 2020, 11:42:50 AM

I really hope that Bob Potter can get to see this.

Regards, and best wishes for 2021,

David

Good call, I will forward Bob a link to the video.

Phil
Title: Re: Tug's Corliss Tandem Compound Project
Post by: modelsteam on December 26, 2020, 12:44:57 PM

   "Nice one Squirrel "   keep them coming . A great result and looking forward to your next project.

         Chris  :old:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Dennis on December 27, 2020, 03:16:48 PM
Hello Ramon,
Simon told me about your tandem Corliss so I had a look at the build this morning.  It is really a beautiful model and wonderfully detailed.  Congratulations on a model well built.

Dennis
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on December 28, 2020, 08:46:26 AM
Phil - I had emailed Bob  but heard nothing as yet.

Chris - you old lurker you  :Lol: out of the wood work at last - you'll be posting about that latest build next  ;D

Dennis - Thanks for taking the time to look in and comment. I am familiar with Simons build but it's been a while since I have seen his engine - an impressive model too.

Computer seems to have 'freed up' some but I notice the video link Phil put up is still blank on this PC.
With a totally crashed laptop - must have been putting all those images up during the MEM show  ::) I'm in the hands of this PC's foibles. One thing I have noticed is that the constant bombardment of spam emails offering Bitcoin and other non desirable offers seems to have dried up completely. Coincidence?

All the best for the New Year guys - hope it's a lot better than this one

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Roger B on December 28, 2020, 10:29:57 AM
Splendid  :praise2:  :praise2: and you kept smiling even with a nasty cut  ::)

I do enjoy watching these complicated valve mechanisms  :)  :wine1:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: JC54 on December 28, 2020, 02:01:24 PM
 Absolutely Brilliant. :praise2: :praise2: :killcomputer: John
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 02, 2021, 11:25:51 PM
Hi Guys, for some unexplained reason this computer is now working better. I have managed to upload some photos to Google photos tonight without the previous issues. So having taken some 'walkround' pics this morning here's the last post on this project.

(https://lh3.googleusercontent.com/Av1AWrY1WfeIoOu9uwDg9WXMR5grbKv0w4l5w092gj_Tm9H-IDrg6n-CmYwkSDLiyI1dWFD7ECfYCK9Wmf2HTVsPK-iwd0_hsP4hmxA8d6RL_Em46Ms0qEsDeDDRSMBjJ4ejUMGyWx2esvQJ1AXKTUwivyc1gxt-H7BMeW6HWZeHqgH6qnpR-HfzPjWKDG2NPPCbFydQouoeHep1Zs_8LyoQhEDExJVLfYQ4zYEfp7W3jD2GMmYFkq8Pq0joZxaEFJiOKSyVGfqQjkBECwjRLAUHB4-_AMNCT1i9Ko3Ih-AB5Xx6lmh2kBQgd23Qv8qonztbS836tnaaL6rUauygpyq3mYIgd_94tcnAgATgpTk0aKINXwgeB13lFABECgZ8YtVML7JRCePvycSO2nhsiR4gGfFFfF4k2MJpmexNymnYVsuaqQg_xFNJlHYoB3JoBFNtHXblKYOWUt8gsTQMV0WqTRsdsE8IzNfD6BRxaUJpapRrAxLNECmRUtr1sNQJmUt03hO1hDQ9M0WUiZps_kGW3p_WdYCgH4Jj64D5vSTXXlixVOzQUquwBZaO9wTT5zi4sIFexdhaNkJiYqLbUUnGOtAJctMzWm38G5g50a5yQOrYXvStkVOeTqq4-nAXnMJk3hmPiZ-IOUFxYEQruZlLV_-4gw4RBaFJwt2A7I4bCyE52QdI_jgOLS6L6w=w1218-h913-no?authuser=0)

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(https://lh3.googleusercontent.com/YgdZkT3MxL4I72txDRw4Sh0kNfNyD1IldWvPibMFWzylLSmzml8wVz3EOxufcTYmaK6iQJAOIAePrdkFkGfBARC7m9W2yGbTs92f7ovgcrlxwbdzc0pk87GwyttoiNeiR6zRne8FZ3VyXJnU5fb_RPxItwSbgJ2FZTc0MrO-LzOym0ous1PymqtTYQEdQIxCs7fXAfolpd2k3r1a3C2RG-sF9DD_vKNa0W3ap5hkx09gbe8n-Ac4smQUJlftrD5yNiElR4g8sG2GuEUWDy80M6_pwowFWWS99D2m59zHD1cdvaWQLWA-4QKSslEaDw1iZojbeHRLjcztou-g0zhH0u4nd53zmLsSepBSxW2FMRu23DUcPPtboZ0bxU_GZL5ZjBc8w4iooj52Geh-ye_sWeWzyyhI4qZ0Wv14x5kCgDeIV7y5m6_RcGvsBH1yGuHT4-wMJ0O3KW_nXRmgZS77Yf21EpXuLCJQPni4hfrMKUaIHVXxVzKwX-WmvRNZWHqjILc9ACOrKFwlD654u6PnQRqsc2KWMaxLXcrK_i9v259HvthqzjRBs8Lns7Kncjzx57iqNR2Rs2R88lzTc29hinZPJOLlrVJUaBs0zlOP7uj0SrUBkziC9eXfzgiGZVXw3InjcEwpdXcEUz2OTmvELZ5DoY2QFglimqpNaqL7czMa2bsM8MvNxmb8kDcVKQ=w1218-h913-no?authuser=0)

(https://lh3.googleusercontent.com/Ib0dAO7YCGTcytdrY1piwJSdmOekQmmjySn2U22O-qWpptcUorMOB9_tvN4OrTaANRxRqcOJ-HgZcXDiUasjf_dCsvrQcf7ECGbV11sruDJCkC5Kk-OSgWtihJoScoigvXPxMMyjy4YH_bK2ieEwahpa17ZCrMMGqdtpFT1qRq36Tso590hJnFYwY58K9h_4heLBPCBtg2rlItIzo8ygVvKIw9LCuDorU6glGiqJ_ahYz-vXZU8xxMzUxgE7ZK7oIrP3Dwz_wNrNlzFMWqvYdOkf1m7XHDG9_vNsooyuzaa6Fl5G33qrZmIS-WaLqPGTSWh2wYn6IK_WjS08k_cIwfExZeud4WyvLTgPukUVHCHkPA8pDrg1sOJNH71UCkJEGyK3tjI6bauO5QxOhghPEEK4ddm7lB9BsGneQAxnDh9wPERqNIu6rAz7eC2wmy9_hVFjNw1NeJQegL8qEjoJNdbUh1ma1wo3rMX7jAIr9-EDGHNNgkF6BDQKqUDDK7R6T5L2PATFilqdO8IL4kol1Vj-gAwESYk3RQIVAlmw891PruRMyiAArM4wbo5KGkPgmi65YBkT4EBR4GzkaPd9G02A38QOs8kc-JPN3G2g0FVn2S5WNm2SsbAztTyMcik1DwQu4ZK8ZJ5_MaPPJUSkwFwnDSWB0gtzI1eSH_2Gh-Ld2SzhZckyz2tqFE8Ziw=w1218-h913-no?authuser=0)

And one final - last - overall look

(https://lh3.googleusercontent.com/e8HeEjBl2ubQ3kgRHDyWjRKARlu09pwM0Eg3DtvF446DhAV-sHZCXAm400PHGIfQpr8M6J33c28mr7XP_6ZnbmgSs7uT0pzZ-y-xbdpfdtUG-AOoDM_GYqXZ2SXk2cEJsiFrfJCN84bHC9iivGW5f_t2KrD01hFpoVAzKUycbhPQbzGRZqSLPByB_qkDO_vdLwt-cUbcfEk8s5r31UU3ZYPTFdOSHowL1C_TFUfTdRMLIpmyvu6cCLRfG2uVwQa7O8lERnyqh7S4reDqh_oVUqnjwjNbL_-FPBQTjrh4NbRg07_aIBibDaKVFCpBnd4SLhHbrgNOy_O7erJHV7EESWRhF5FaCk8gF7Dw_vJuefhKgcdMGa8SSJigUqlDZ1tD0BcuDEesB4yRm92jZhGMpijX1GWM7fkVlKe3qXSTJnpTYa1GG2sOWHg3QvTXug2LypJrJZVOly2SZZhOt4pdjvAw5dIbMBtDrQHzR5JBa09RR1Rrhduh7yTFN53n_T-Arjw-cUrsGbh5XIbiucFkr1Bem1u0PNyAeDpl97FDdLx7ZnIclXDRqdux15xANrU0lxJeISFlGhc9c94ritMv276vTJBRc6NmUCSsELpt1Q2Yz1ACIsSsPeZ2OKkNDCMju0E6qbXQDariIcNKCM3dJbajwuOO1Zveu1630EGwzt_SOFlehppmyEJ1L5xi0g=w1218-h913-no?authuser=0)

That's it guys - photos as promised and the very end of the project. It's all now under wraps - the decision to have it on the sideboard in the hall was vetoed - by me - yes really. Just too big and besides with it in the workshop I can run it whenever I want  :)

Time to move on though my plans will see little to post about- all the best for the coming year,  that's it from tha ol shid for some time to come

Tug
Title: Re: Tug's Corliss Tandem Compound Project
Post by: cnr6400 on January 03, 2021, 12:25:54 AM
Top notch engine as said before Ramon, the detail pics were great, really enjoyed looking through them. Thanks for posting. Happy New Year!  (in the "ol' shid" or out of it!)  :cheers:
Title: Re: Tug's Corliss Tandem Compound Project
Post by: steam guy willy on January 03, 2021, 02:16:53 AM
 Hi Tug looking Wonderfull and really good photos ...have you weighed it yet. ??  something to be really proud of
 I have a cable from my MacBook Air that plugs into the telly and they look even better on the large screen, !!
Looking forward to your next project..

Willy
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jasonb on January 03, 2021, 07:26:32 AM
Thanks for the Photos Ramon , nice to study all the detail you have put into the engine.

Don't let it be too long before we see that twin shaft and what you do with that block of CI.

J
Title: Re: Tug's Corliss Tandem Compound Project
Post by: derekwarner on January 03, 2021, 08:33:10 AM
Did I read in another article [somewhere] that the close-fitting wooden slats over the sides of the flywheel were to reduce the overbearing howl/shriek like sound emitted from the speeding spokes thrashing thru the air?..........

Brilliant photographs  :ThumbsUp: ......
What is the completed [ball park] weight?

Derek 
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on January 03, 2021, 08:36:03 AM
Hi Ramon,
 Gobsmacked!
Fantastic model, enjoyed the video loved the pictures & enjoyed the build journey.

Have a safe New Year, & looking forward to what ever you decided to build & share with us.

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: gbritnell on January 03, 2021, 01:52:55 PM
A truly outstanding engineering miniature. Your attention to detail is first rate. Thanks for all the documentation along the way.
gbritnell
Title: Re: Tug's Corliss Tandem Compound Project
Post by: tangler on January 03, 2021, 04:34:30 PM
An exemplar and an inspiration.  Thank you so much for sharing with us   :ThumbsUp:
Please don't stay away for too long.

Happy New Year to you and Sue,
Rod and Sally
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Kim on January 03, 2021, 05:01:45 PM
That is beautiful, Tug!
Thanks for all the detailed photos. The workmanship is just amazing!
Kim
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Laurentic on January 03, 2021, 06:22:24 PM
Came upon this thread only shortly before Christmas would you believe - I'm really good at missing good threads - and have spent quite some time since Christmas reading through this thread from beginning to end, yes, all 41 pages of it!  Could only read for about an hour or so at a time before my eyes give me a headache and send me dizzy, so it's taken a while.

What can I say that hasn't been said so many times before?  The build is stunning, the attention to detail is stunning, the set ups were so interesting and informative, the discourse on using JB Weld so interesting and informative too, and the end result is not only stunning and a credit to you Tug but a target for all of us to aim for but I fear not many will achieve - I certainly won't.  What you have ended up with Tug is an exhibition quality model with the added bonus that it works too.

A nice touch was finding out even the good and great make mistakes and/or are not satisfied with what has been made and make it again, I am not alone in that it seems!  Mind you, I make most parts at least twice if not three times before they are 'acceptable'.

Well done Tug, you have my admiration - I will now make sure I follow your next projects, may there be many to follow too.

Chris
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 04, 2021, 11:08:56 AM
'Laurentic' and guys - thank you all for taking the time to post and for your kind comments.  :embarassed: I can think of better Xmas reading perhaps Chris but each to his own eh? :D

I feel I may have come across as being a bit short finishing off that last post so.....

I know I have said this before but posting about a project has become, for me, a two edged sword. It takes a fair amount of time from that of actually modelling to think about taking images of procedure, then sit down afterwards and sort them before writing and inserting them for others to see. I've always done so on the basis that it may be of interest to others and that what I do to achieve a result may also be of use to someone else. If that is the case then it has been worthwhile but believe me, I must stress, I certainly do not see it as doing it for any sort of personal ego. To receive a comment such as yours Chris on the odd occasion makes up for those times when after a long post and a considerable increase in visits there is nothing but a huge silence. That situation always leads to questioning whether it's all actually worthwhile. When I've said that before it usually provokes the odd comment to the positive but that is usually short lived and soon forgotten.

I'm getting old - and tired! Really! I've always gained satisfaction from helping someone so that's what has always motivated me to post in the past. I've said before I like to think that I write as if I'm speaking to, and certainly not at, whoever is reading it. I'd like to also think that that comes across to the reader- maybe I'm fooling myself - perhaps it doesn't :(

Some may have noticed that since the posting resumed on the Corliss there have been few if any 'in progress' pics. Minor health issues over the last eighteen months or so have lead at times ( a lot of times) to extreme tiredness so time 'awake' is precious. I have a new project but must confess I have little drive to continue posting about the construction of it because of that reason. Hope everyone will understand that.

So, cnr, Willy, Jason, Derek, Kerrin, George, Rod, Kim and Chris once again my thanks for taking the time to comment and also to those who have previously   :) and to those who asked ......

Willy, no I haven't weighed it as such but I can't lift it myself! Hopefully in the not too distant future you'll get to see how heavy it is!

Jason, the twin shaft is on semi permanent hold. Mainly due to Covid restrictions there seems little point in pursuing such if being able to run it is virtually impossible. And the cast iron - well ????

Derek - I believe the slats were mainly to prevent 'windage' in the surrounding environment which would have been considerable from an engine working at full chat! As said to Willy no idea on weight - I could lift the flywheel end with both arms but couldn't support it with one long enough to place those blocks under!

For once guys I can't say with conviction "I'll be back" but of course one should "never say never"  ;)

My regards to all - Ol Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: Jo on January 04, 2021, 12:10:08 PM
I know I have said this before but posting about a project has become, for me, a two edged sword. It takes a fair amount of time from that of actually modelling to think about taking images of procedure, then sit down afterwards and sort them before writing and inserting them for others to see. I've always done so on the basis that it may be of interest to others and that what I do to achieve a result may also be of use to someone else. If that is the case then it has been worthwhile but believe me, I must stress, I certainly do not see it as doing it for any sort of personal ego. To receive a comment such as yours Chris on the odd occasion makes up for those times when after a long post and a considerable increase in visits there is nothing but a huge silence. That situation always leads to questioning whether it's all actually worthwhile. When I've said that before it usually provokes the odd comment to the positive but that is usually short lived and soon forgotten.

Over the last 9 years that MEM has been in existence I have constantly posted my builds (or casting fonding during the major surgery recovery), participate in other's threads if appropriate, Moderate and Administer this forum. What I have learnt is you get out of participating what you put in but don't expect everyone to participate: the vast majority of members have never posted  :(  and some only post once or twice never to post again. Those that do participate show interest in different aspects of a build: yes there are the constant complementers  ::), those that only join in for the purpose of clarification to aid their understanding and many new members who seem to be shy as it takes time before they move beyond posting only on the threads of those people who welcomed them into the forum.

During the duration of Covid I have noticed that many of the members are struggling to post anything at all and the number of builds being undertaken has drastically reduced. We all need to encourage and support each other in any way we can. To that end I continue to post my builds in the hope that it is of use to someone who may take the time to read it and hope that it was of use to them. I know people are interested as I can see the view count going up  :cheers:

Jo

Title: Re: Tug's Corliss Tandem Compound Project
Post by: ShopShoe on January 04, 2021, 01:40:14 PM
Ramon,

What can I say? It seems that everyone has said so much that my voice becomes only a minor "Me, Too." and I become more restrained. This time this project is so astounding, and a long time coming, and I feel I have to add my compliments to the mix.

I bow to your skills and perseverence on this project and echo all that has been said. GREAT build, incredible detail, etc.

And thank you for the in-process updates when you were able to put them up for us. You are one of the encouragers and I thank you for it.

ShopShoe
Title: Re: Tug's Corliss Tandem Compound Project
Post by: ShopShoe on January 04, 2021, 02:03:49 PM
OT Sidebar:

--

Jo,

I have noticed what you have noticed and my shop activities have been cut back by a series of events in my life. Not all of this is due to Covid, but **** happens.

I have been paying attention to this and other forums, and commenting when it seems appropriate (Which is when I think I can add to the discussion or help someone.)  I hope to be back to more active shop life as circumstances allow.

I hope all of us can continue in this community as we can, and I encourage the beginners and the shy ones to come forth, perhaps with some new ideas that they have actually implemented in spite of "...things" at this time.

I could do with some short and sweet posts of new tooling, inventive posts on finishing metal, and maybe some mechanical objects of whimsey made for practice and entertainment: Some things that might be made in a short time when personal life, weather conditions, and family obligations allow a few hours of playtime.

BTW, on a personal note, my desire to post was diminished after the Photobucket situation, and now YouTube might be no longer an option for me. I can work around, but I can feel the enthusiasm leaking out when I have to spend more time working around to make posts instead of working in the shop.

Keep Calm and Machine On, Keep 'um Turning, We Do Our Parts, etc.

ShopShoe
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 04, 2021, 02:22:35 PM
Over the last 9 years that MEM has been in existence I have constantly posted my builds (or casting fonding during the major surgery recovery), participate in other's threads if appropriate, Moderate and Administer this forum. What I have learnt is you get out of participating what you put in but don't expect everyone to participate: the vast majority of members have never posted  :(  and some only post once or twice never to post again. Those that do participate show interest in different aspects of a build: yes there are the constant complementers  ::), those that only join in for the purpose of clarification to aid their understanding and many new members who seem to be shy as it takes time before they move beyond posting only on the threads of those people who welcomed them into the forum.

During the duration of Covid I have noticed that many of the members are struggling to post anything at all and the number of builds being undertaken has drastically reduced. We all need to encourage and support each other in any way we can. To that end I continue to post my builds in the hope that it is of use to someone who may take the time to read it and hope that it was of use to them. I know people are interested as I can see the view count going up  :cheers:

Jo


Jo -

Please don't take that as a criticism of the character of anyone on here, regular poster or not.

We are all different and I am well aware of those who, for whatever reason, do not wish to post. I have two good friends one who posts extremely rarely the other not at all but both of whom phone regularly to discuss what's been posted.

It's an observation on my part that's all. I think it would be fair to say, though not on here from the very outset, since the time I did first post I have always tried to portray to others that all is achievable within the remits of skill and equipment. The subjects I have posted on I have always tried to cover fully to show that and I'd like to think it fair to also say I've 'done my fair share' over that time.

Of course it's nice to receive plaudits and commendations over skill and results - but to me a line from the last post by Shop Shoe is far more gratifying than any reference to my skill level - " You are one of the encouragers and I thank you for it" -  that and similar lines on occasion in the past, sometimes from 'unknown' names - now that does give me a feeling of self satisfaction to think that someone considers such enough to say so.

When I say I'm tired I really mean it - age is catching up fast but like any ex 'airborne' squaddy, being worn down by it's challenge is one thing - giving in however is most definitely not an option.

Covid has seen me lose interest in plastic modelling, sailing, flying control line and all because the social contact is not there. None of that is dead - just dormant - but it has given me time to concentrate on machining something I intend to continue with but unlikely to post about.

There's a French expression - not sure how to say it in French but it's meaning is "the well has run dry"


Shop Shoe, my thanks indeed for your kind comments - very much appreciated.

That's it for now

Regards - Tug






Title: Re: Tug's Corliss Tandem Compound Project
Post by: vcutajar on January 04, 2021, 08:14:39 PM
Stunning photos of the engine Ramon.  :NotWorthy:
Managed to find the video also.  Running like clockwork. :NotWorthy:

Vince
Title: Re: Tug's Corliss Tandem Compound Project
Post by: samc88 on January 04, 2021, 09:17:13 PM
Beautiful result, Ive recently read through the whole thread and the work is very good. I tend to follow builds in work as im on tapatalk i get notifications on threads so get  quick look at the post but rarely have time to post anything useful
Title: Re: Tug's Corliss Tandem Compound Project
Post by: propforward on January 04, 2021, 09:47:20 PM
Over the last 9 years that MEM has been in existence I have constantly posted my builds (or casting fonding during the major surgery recovery), participate in other's threads if appropriate, Moderate and Administer this forum. What I have learnt is you get out of participating what you put in but don't expect everyone to participate: the vast majority of members have never posted  :(  and some only post once or twice never to post again. Those that do participate show interest in different aspects of a build: yes there are the constant complementers  ::), those that only join in for the purpose of clarification to aid their understanding and many new members who seem to be shy as it takes time before they move beyond posting only on the threads of those people who welcomed them into the forum.

During the duration of Covid I have noticed that many of the members are struggling to post anything at all and the number of builds being undertaken has drastically reduced. We all need to encourage and support each other in any way we can. To that end I continue to post my builds in the hope that it is of use to someone who may take the time to read it and hope that it was of use to them. I know people are interested as I can see the view count going up  :cheers:

Jo

We are all different and I am well aware of those who, for whatever reason, do not wish to post.

I look at many threads on here. To be honest, I shy away from posting on threads such as this one, because the work is simply magnificent, and I kind of don't feel I can add anything beyond what has been said. So I really appreciate threads like this because they are an inspiration. I pick up many tips from pictures of set ups and so on. But I do get the effort required to make detailed threads. I used to write "how to" tech threads on motorcycle maintenance, and it is time consuming. So from an avid fan / novice, to you and all the other experienced and accomplished members, thank you for posting your work.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Admiral_dk on January 05, 2021, 08:24:27 PM
Sorry to hear about your health issues Ramon - this is never nice - no matter how you view it ....
I really hope that you still get the opportunity to enjoy whatever life is left for you and Sue.

As one who have had sleep deprivation (apnøe) problems most of my life, I can relate to being too tired to do anything in the workshop as it can be dangerous, or just detrimental to progress on the subject you want to work on ....

I really should remember this opportunity to once again thank you for all your help and explanations over time on this forum  :praise2:   :praise2:   :praise2:
I have learned a lot from your postings and enjoyed them immensely - especially those about CI Engines (diesels to some) for Model Airplanes. This is both from an understanding how they work, how to make them and many more details, that you shared with us all here  :ThumbsUp:  :cheers:

I hope you still look in from time to time .... if only to see what is going on here.

Say hello to Sue and best wishes to you both   :)

Per
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 06, 2021, 09:36:52 AM
Hi Vince, Yes very pleased with how it runs - far easier to achieve and much better than anticipated.

Sam, thanks for commenting - I do appreciate that it may not suit everyone to post but it's always nice to hear from someone 'new' when they do

'Prop' - thanks to you too - I do try to pass on anything that I have learnt over the years so good to hear you feel it of use. Something I am aware of is that 'knowledge' from my past is slowly becoming obsolete as things move on apace. I recently searched for 'slot drills' - every thing that came up was solid carbide - I had to try again for HSS. I began to use solid carbide tools in my last few years at work but they were only used on the newly installed machining centre.

Per - I am on top of the health issues with the help of medication but thanks for your concern - there's no plan to slide off the old perch quite yet so I intend to hang on in there for as long as possible - I'm 76 in five days time - hopefully I'll be able to say the same about being 86 in ten years time :D

I'm afraid the tiredness - both mental and physical - is just something that has to be allowed for in any planning  ::) just means what time is available with a clear mind is becoming a slowly diminishing commodity. Sights will have to be set much lower as the years progress. The very best to you to - Sue sends her regards.

I think we can bring this particular journey to an end now guys. When I set out it was not so much on a whim but just to see how far the machining would get rather than sell the castings on. No one is more surprised that it's actually finished than yours truly but like most of what's built in the past it's now under wraps and it's time to move on.

My thanks to all who have followed the thread whether posting or not and to those that did for all the relevant comments you've made over the time - I have really enjoyed making this model and it's description and, even if I meandered a tad (a tad??) OT at times it would appear you have too.

My very best for this year to all :)

Tug

Title: Re: Tug's Corliss Tandem Compound Project
Post by: kvom on January 06, 2021, 01:27:57 PM
I hadn't seen photos of the back side of the engine  before the last batch you posted.  Can you explain the brass assemblies along the sides of the cylinders as well as the small valves at the base?  Is the rod supported by brackets next to the flywheel the barring bar?

Thanks.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Ramon Wilson on January 06, 2021, 05:24:57 PM
Hi 'kv'

The small valves at the base are the cylinder drain valves - I think there is a picture in the thread somewhere of drilling through the base and having an o ring seal where they go up into the cylinder. They are 90 degree turn and made from scratch. The four pipes go to a manifold beneath then a single pipe to the exhaust system at the end.

The pipework at the centre height of the cylinders although through flow is actually a dummy. It represents the take off point for a steam usage indicator. Technically it should have a two way valve to isolate one side from the other but sometimes these were fitted just when required - I went for the easy option.

Yes the rod is the barring handle - it's quite surprising just how little a force is required to move the flywheel with it in true fashion, hardly any but scaled up of course it was probably a different matter.

Hope that helps some

Regards - Tug

Edit - I overlooked the pressure relief valves. Again dummies. these were usually fitted either atop the cylinders or on the side. A search of several books showed one engine with them fitted as such - they looked better to my eye than sticking out at 90 degrees.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Hrcoleman on January 08, 2021, 11:28:26 PM
I can only add to what others have said here.  Pouring over all the images in this thread as well as the informative text and finally the YouTube videos; this is a true testament to a master model engineers skills.  I thought I was a half reasonable shaper of bits of metal, but what you have built here Tug, from the oil boxes on the mani bearings to the smallest linkage, is a high bench mark for those of us less skilled to aim for.
Happy birthday as well.

Cheers,

Hugh
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Steamer5 on January 09, 2021, 08:34:16 AM
Hi Ramon,
 My dad retired at 60. Mum died a couple of years later, since then he spends some of everyday in the workshop, he will be 94 in 2 months! He credits time in the shop to keeping him going. He has just finished repairing a 200 year old telescope for a friend of his, cutting the 3 inch rack was a challenge but he got there......he called in a few favors on that one.
Guess what I’m trying to say is we all have to keep the little grey cells busy, how we do that is our choice, making things is one, imparting that knowledge on to others is a gift that gives both ways. Today it is a lot easier than in the past to reach a far bigger audience, Like most here I’m in amazement at your work & am thankful that you are prepared to spend the time sharing it with us. Roll on your 86th birthday........enjoy the journey!

Keep safe, the news here is reporting COVID is ramping up in the UK. We are very lucky here, but at any time we could have an out break, the UK strain is here luckily caught in Managed Isolation

Cheers Kerrin
Title: Re: Tug's Corliss Tandem Compound Project
Post by: HG Corliss on December 29, 2021, 12:20:17 AM
I'm not to sure if this will get to the right person as the post i was researching was in 2017
I'm inquiring about the Arnold Throp drawings of the Model Condensing Corliss Engine
and if they are still available
I'm getting ready to start the Corliss engine project and have been researching for as many drawings as i can find
right now i have James Wolf, Charles Heckel, and The Model Engine Maker drawings
looking for the Arnold Throp drawings (16 Pages)

Any help would be appreciated
Thank-you
HG Corliss

(yes his 2nd grandfather is my 6th)
Title: Re: Tug's Corliss Tandem Compound Project
Post by: deltatango on December 29, 2021, 01:02:12 AM
Hi HG Corliss,
Welcome to the forum!

Bob Potter sold his business 'Southworth Engines", including I think the Corliss design, to Blackgates Engineering - try sales@blackgates.co.uk (http://sales@blackgates.co.uk) .

If they can't help then there are alternative ways. Please take a look at https://www.modelenginemaker.com/index.php/topic,9540.0.html (https://www.modelenginemaker.com/index.php/topic,9540.0.html) where I'm part way through building a Throp/Southworth engine.

Regards, David

Just edited to get Bob Potter's name in there correctly.
Title: Re: Tug's Corliss Tandem Compound Project
Post by: HG Corliss on December 30, 2021, 09:32:31 PM
Thank you will try that route

Herb
Title: Re: Tug's Corliss Tandem Compound Project
Post by: Craig DeShong on December 31, 2021, 06:13:14 AM
Chiming in rather late here Tug, but I too will congratulate you on a magnificent model.  I’ve been watching this a-building all along and have enjoyed the journey immensely.  I thoroughly appreciate the attention to detail you exhibit in this model.  It’s what makes it such an exemplary model.